SKU: 97232674188

Knock Monitor Pro V4

$238.05 $264.50
Save 10%
No.2 Bestseller on 2pierres.com >

Pay in installments of $66.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 19 - Sep 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Knock Monitor Pro V4Highly Reliable and Accurate Knock Detection Knock Monitor Pro V4 Advanced knock detection. Packed with stand alone capabilities and versatile display options, this compact device offers unbeatable features at a competitive price. The vivid 3. 2 inch touch display, housed in CNC machined aluminum, ensures convenient and robust device. Switch effortlessly between display modes, optimizing your tuning experience. From waveform view to Knock vs RPM vs

Highly Reliable and Accurate Knock Detection

Knock Monitor Pro V4 –Advanced knock detection. Packed with stand-alone capabilities and versatile display options, this compact device offers unbeatable features at a competitive price. The vivid 3.2-inch touch display, housed in CNC machined aluminum, ensures convenient and robust device. Switch effortlessly between display modes, optimizing your tuning experience. From waveform-view to Knock vs RPM vs MAP, Knock Monitor Pro V4 delivers innovation and precision in a visually striking, functional package.

Whether you are learning to tune or you are already a professional, give yourself and customers the peace of mind that the tune is safe.

We guide new users on how to use the device effectively.

Knock Monitor Pro V4 Features

  • 3.2" Touch-Screen LCD
  • Audio Record & Playback on Device - record your race!
  • Standalone Knock Detection
  • RPM | Knock | MAP / AFR / EGT input
  • Knock Windowing
  • Cylinder Knock Count
  • Knock Frequency by Bore Size
  • Optional Screen Flashes Alert
  • Upper harmonics (2x Hz) mode
  • 3 Knock Views (Wave, RPM, Load)
  • Auto & Custom Knock Threshold
  • 64GB Device Storage
  • Sample Recordings & Logs
  • Industry M12 Connector
  • Map Sensor input
  • Analog Output To Dyno or ECU
  • Carrying Case
  • Billet Aluminum Frame
  • Windows Software
  • Dual Channel Knock Detection *
  • Overlay EGT, AFR or MAP in log
  • Future Firmware Updates Possible
  • CANBUS output ** 

* Elite+ carries two knock sensors.

* Elite+ now has IPS quality display.

** CANBUS is in version 4.1+ (August 2024)

User Manual

529

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 97232674188

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Dustin
Carnegie, US
★★★★★ 5
Works if you need help. Not a miracle in a bottle.
Size: 1 Count (Pack of 1)
It has worked every time I've used this product. Won't fix a damage catalytic converter but will help you pass the test if your car almost passed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
L
Verified Purchase
Leslie Price
Massapequa, US
★★★★★ 5
Worked like a charm.
Size: 1 Count (Pack of 1)
Used it as directed. Down to an eighth of a tank. Poured it in and added enough gas to get back to one half a tank. Wanted to get it mixed in really well. Immediately jumped on the interstate and ran 75 MPH for 40 miles. Stopped and filled the tank and when I restarted the engine, the light was off. Coincidence? Not a chance. Light had been on continuously for weeks. AutoZone said I needed a catalytic converter. Nope. One thing I found out the hard way. If your gas filler has a flap at the top, make sure it is easy to push aside. Mine had a little release button near the top that the filler hose would depress before the flap would release. Dumped the first bottle right on the ground. Twelve bucks wasted. No one to blame but me, I guess. Still a bargain, even at twice the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
B
Verified Purchase
Brenda A DeRouen
Lexington, US
★★★★★ 1
Before use on March 15 two days later March 17 engine light still on
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
I read the specs on this product and it was guaranteed to cleanse as well as turn engine light off in vehicle. I received it March 14.2026 and used it on March 15.2026 I took a picture on Sunday before I entered it into the gas tank engine light was on at that time. Today is March 17.2026 and engine light is still on. The truck was driven for one hour on the 15th 45 minutes on the 16th and 50 minutes on 17 March. Still the engine light is on. Got home parked the vehicle took a picture again to show engine light is still on product guaranteed it was shut it off, but unfortunately product does not work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 4
Good stuff
Size: 1 Count (Pack of 1)
I've used and it's worked for emissions for me and that's with having check engine light on..use stuff,drive around a bit,clear code drive to emissions and should b good unless got serious problems. It's good to use 1 or 2 times a yr if high mileage vehicle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2025
A
Verified Purchase
A.U.
San Leandro, US
★★★★★ 5
It works!
Size: 1 Count (Pack of 1)
My 2005 Jetta failed the inspection and my mechanic said (after clearing the engine light) that I should drive the car for 20 min highway and 20 local. We've tried that the whole day but out of three lights on his device only 1 went away. Next day the light engine came back. After not being happy with the explanation offered by him (a family friend) that I should keep driving it until we get lucky I went online and found CRC 05063. Followed the instruction (one bottle on full tank of gas). Before my tank was under 3/4, engine light went off!! At half tank I went and did the inspection - IT PASSED! I am really impressed! Update August 2015! I have been using this product for 2-3 years now and if it is not working for you please read. In July I have used the first bottle and took my 2005 Jetta for inspection. It failed. Ordered a second bottle and it failed again. My mechanic said keep driving. Did 200 miles in one day and nothing. Decided to take matters in my own hands and ordered Autel MaxiScan MS300 ($18, it allows you to read and delete codes). There were two faults - EVAP and 2nd something about Oxygen. Went online and this is the first time I heard about driving cycles. These are steps that you have to follow so that your car's computer can start measuring all the parameters needed for the test. Driving cycles are not exact science but I tried to follow the instructions as much as I could and after just 20 minutes (10min city and 10min highway) ALL the parameters were set and I passed the emission test with flying colors! So, just before you give a comment about CRC like "tried and didn't work" be aware that there are other things you have to take into account.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 1, 2013

recommand products

LPG Dice Scaled Eye Dice Set Black/Gold
58.95
Battlefield in a Box: Gothic Sector Mundus Imperialis: Highways
67.95
Ultimate Guard: Squaroes Squaroe Avatar: The Last Airbender Aang
35.95
Santorini God Pack Tides of Poseidon Board Game
27.95
Ultimate Guard: Playmat MTG: Tarkir Dragonstorm Abzan Devotee
34.95