Link ECU CAN Knock Detection Module (KnockBlock)
Link ECU CAN Knock Detection Module (KnockBlock)
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30 days returns
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Expert Support
Pay In Instalments!
Pay In Instalments!
At checkout you can choose Klarna or Paypal Finance to help spread the cost!
Will It Fit My Pride & Joy?
Will It Fit My Pride & Joy?
If you are unsure if something fits or which option is best for your application, that blue chat box on the bottom right hand side will direct you to one of our amazingly talented team members who are more than happy to discuss your car!
Be careful, the passion might take over and they'll ask for pictures of your build!
We at CDMSport are veterans when it comes to car knowledge.
We have our own race team, workshop and everyone here is a genuine experienced petrol head!
In addition to everyone on the team having fantastic overall knowledge & experience, we have dedicated specialists for your questions on the more technical stuff such as engine components or electronics.
Lightspeed Shipping & Easy Returns!
Lightspeed Shipping & Easy Returns!
Crazy Fast Shipping
We pride ourselves in fast shipping and unparalleled after sales support.
All international orders will be delivered without import tax/duty as we have this all pre-paid for you.
We aim for same Day dispatch before 3PM on all in stock Items.
If something you ordered is not in stock, we will email you and notify you of the new ETA.
UK & Ireland Delivery is 24hour.
Europe is 1-4 days.
Rest of world is 3-5 days.
Shipping times above are based on the express shipping option selected at checkout.
Hassle Free Returns
As car enthusiasts we understand the importance of flexibility on returns.
All stock items have a 30 day return period where you will be issued a full refund for the parts.
If you order the incorrect part, we will do our best to assist you in getting the correct part as soon as possible for as little money as possible. It happens, we have been there!
This is why we are one of the worlds leading aftermarket car parts brands. We are enthusiasts and we know what's important to our community CDMSport car enthusiasts!
Link KnockBlock G4+ (KNB)
The G4+ KnockBlock is an essential tool for tuning and can aid in the early detection of incorrect ignition timing, lean air/fuel mixtures and mechanical issues. It is used it with ear buds, headphones or noise cancelling ear muffs and features special filtering to allow you to listen in and detect knock early.
Listen to one or two knock sensors
Special filtering design improves signal to noise ratio
Can be used with ear-buds, headphones or noise cancelling ear muffs
Long life lithium rechargeable battery
Rugged CNC aluminium enclosure
Flying lead headphones connector
Can be used with all OEM knock sensors
Can be used to interface directly to a laptop for recording of engine noise or knock sensor frequency analysis (using PCLink G4+)
Please note headphones with their own noise filtering may be unsuitable for use with the knock block.
What’s in the Box?
G4+ KnockBlock
2 sensor looms (attached)
1 headphone loom (attached)
Quick Start Guide
1 USB cable mini
2 Bosch type doughnut OEM knock sensors
2 small Link Engine Management stickers
Specifications:
Operating
Install the knock sensor/s in a suitable location on the engine (typically on a solid mounting point on the block near the cylinder head)
If only using one sensor, leave the unused sensor cable disconnected
Turn the volume control clockwise until it clicks. The LED indicator will turn blue when the KnockBlock is operating
Turn the volume to the minimum setting (most anti-clockwise)
Connect headphones to the 3.5mm audio jack
Run the engine and carefully increase the volume (clockwise) until engine mechanical noise can be heard. Adjust to a comfortable listening volume
Charging
Turn off the KnockBlock by turning the volume control anti-clockwise until it clicks
Connect the USB charging cable to the KnockBlock’s Mini USB connector. Can be charged from any standard USB charger PC, laptop, car or cell phone charger (2.1A at 5V max)
The LED indicator will show red while charging. When the indicator turns off the battery is fully charged
Charge the G4+ KnockBlock after use and before storage
Operating
Install the knock sensor/s in a suitable location on the engine (typically on a solid mounting point on the block near the cylinder head)
If only using one sensor, leave the unused sensor cable disconnected
Turn the volume control clockwise until it clicks. The LED indicator will turn blue when the KnockBlock is operating
Turn the volume to the minimum setting (most anti-clockwise)
Connect headphones to the 3.5mm audio jack
Run the engine and carefully increase the volume (clockwise) until engine mechanical noise can be heard. Adjust to a comfortable listening volume
Charging
Turn off the KnockBlock by turning the volume control anti-clockwise until it clicks
Connect the USB charging cable to the KnockBlock’s Mini USB connector. Can be charged from any standard USB charger PC, laptop, car or cell phone charger (2.1A at 5V max)
The LED indicator will show red while charging. When the indicator turns off the battery is fully charged
Charge the G4+ KnockBlock after use and before storage
What’s in the Box?
G4+ KnockBlock
2 sensor looms (attached)
1 headphone loom (attached)
Quick Start Guide
1 USB cable mini
2 Bosch type doughnut OEM knock sensors
2 small Link Engine Management stickers
Thousands of happy customers worldwide!
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Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Cracking service orderd at lunch time came the next day. Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!
Great customer service 👏🏻
Very supportive and no lies and im still surprised on response time, they do as they say and will support you even if you are in hurry to finish your project.
Ordered at 9am recieced at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs. 10/10 recommend these guys!
Conor is a top man very helpful and always replies to any questions you have about his products.. he has everything you might need too.. well done on running an a+ business conor keep up the good work
Brilliant company to deal with, very quick to reply and get everything sorted absolutelyno hassle in placing the order. Quick delivery even at a busy period. Highly recommended, will definitely continue to do business in the future.
Got a Tenaci twin plate clutch for my 2JZ Drift Car. After trying a few “better known” brands such as Tilton & Extreme, and never being super happy with the feel or else the clutch being to harsh and destroying my drivetrain.....
Extremely helpful, went out of their way to ensure we would have product on time for the Donegal rally!! Fast response time to queries, couldn’t fault the product does exactly what it’s advertised to do. Would definitely order from them again.
Great lads to deal with. Will be using them again for sure
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
Conor is a legend, he provided and installed the r8 coil packs on my Nissan 180sx, and completed wiring harness. Great price and fast delivery and response to questions. 5 out 5. Will definitely be a returning customer
For a start great products happy responsible staff Conor was great to work with product came inside time given! I will be buying more parts from this company in the future
Quick delivery and top quality product.
Great service
Purchased a hydraulic handbrake from cdmsport and really happy with my experience. Good product and quick fast shipping times. Would recommend and use this company again.
Nothing but great help and great products trustworthy as always will be back
Conor has been fantastic with my purchases for my car. Kept me upto date on everything. Great company to buy from
Fast replies and quick shipping
Quality hose and fittings
Excelent product and really fast delivery. I highly recommend . Thank you
