Sakuragarage
KnockBlock G4+ (KNB)
KnockBlock G4+ (KNB)
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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
Reviews
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Alec H
I worked with Mike Drexel on a remote tune for my ‘97 Miata with MS3 and a mildly build NA motor. I drove my <500 mile built motor 6hrs to tail of the dragon on MS3 basemap, he got me booked for a remote tune in the morning the next day and even with not the best internet connection he got me sorted within 7 logs and it drove phenomenally well the entire rest of the week I was down there. Good power, Always started hot or cold, idled well, fans or accessories didn’t kill it at idle and it was over all very smooth even when getting stuck behind Harleys going 5mph on dragon. Cannot thank him enough.
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Nick L
My project was to Megasquirt swap a 1998 Suzuki Carry Kei Truck. I installed a GT15 turbo, LS2 coils, Subaru STI injectors, and many other modifications.I learned about Mike from a Megasquirt Facebook group I was in. I originally didn’t listen to his advice, and decided to try and diagnose and tune everything myself. After spending days trying to figure out the issue, I decided to throw in the towel and reach back out to Mike.Mike worked remotely with me tirelessly through the night to rectify the issues I was having with this one-off install. Mike is an absolute wizard with diagnosing and tuning. From the first tune file I could tell Mike was on a level that my previous tuners were not. His response time is incredibly fast for the work he does, and he’s very patient, even with my thousand questions. When we finished with the 93 octane tune I was so impressed that I made the call to go ahead and tune on e85. After a few more revisions we had a completed 93 octane and e85 tune. This further gained power, and truly made the truck how I wanted it to feel from the time I started the build. Mike is a master of his craft, and he will be my tuner from here on out.
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Tristian F
I brought my Z 32 to @mike Drexel he came highly recommended and did not disappoint. Been driving it quite a bit and has been running absolutely phenomenal. I took it to my first car show and one it !! Can’t thank Mike Drexel and Sakura Garage enough !!
