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Firmware depends on microchip type.Only LKM1 with Atmega328PB can use integration and has automatic time setting update. All others, you choose the time setting and int toggle doesn't matter. All firmware posted has changeable led display eg. original,bar,or single led. Also a sample length setting with a max setting of 20 milliseconds 

Firmware only updatable via ISP. Can use an Arduino or Arduino clone with AVRdude. When you dowload the firmware, you must rename the file and add .zip to change it into a zip file to extract.

New for 2017!!!!  ONLY FOR THE 1 CHANNEL .

2 channel upgrade in the future.

​Native USB using miniusb port, integrated knock using ECU signal to sample based in Engine angle


UPDATED GUI 6/2/2017

Starting 2-1-2015

Board Only $100 + shipping

Fully assembled ​$135shipping

2 Channel  available 

New blade 16 LED displays . Auto Dimming. Uses stereo headphone chip for 2 knock sensors. 2 analog out channels  but one digital channel. Board  , $160 + shipping  . Fits in the Serpac case

Board and display $110+ shipping


Updated 6-3-2017

Mitsubishi Mirage C53 4G63T 60-1 T4

Toyota Tercel 4AGZE SC

Mitsubishi Mirage 4G61T.

Infiniti G20 SR20DET

Honda Civic EF B16

One of my AWD conversions

My Dodge Colt AWD before

full forged rebuild. 

IDRC 2008 Semi-Finals

1987 Mitsubishi Mirage 4G63T

1981 Datsun 210 SR20DET GT35R 

At JCCS 2016 Long Beach

Don't have a knock sensor? You can grab any sensor. The Bosch wideband is the most flexible. Most OEM sensors are tuned specific to the engine it was designed for.

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Board options

Digital Knock sensor gauge

Bringing new school technology to old school rides. Specializing in retro fuel injection installs and engine swaps. With 25 years experience as a mechanic and 20 years in the auto refinishing industry. 

Here is a simple GUI to program the board with different knock sensor sttings. NEW Gui toggles integration for ECUs that have an integration output. The line graph is alot faster. Also adjust the sample time if not using integration. The version 1.2 works with older boards and firmware. Version 1.3 is for firmware shipped after 5-20-2017

AFTER DOWNLOAD OPEN File location and rename file .Then Extract all files.

For some reason the web server host renames the file some long alphanumeric name without the zip file extension. Just rename it. 

LilKnockMeter V2™ is a fully adjustable knock sensor gauge.  Audio out. Digital 0-5v out. Analog 0-5v out. No tach signal needed. Use headphones to help tune.

Here is the 8 Led display for the knock sensor gauge. Uses a shift register to run the leds. 5 wires total. 2 for power and 3 for data from knock board.

Insane Import Performance