Knock light visual display
Knock light visual displayPosted by corey laurence at November 26. 2011
Hi, I've just wired in my new G4 knocklink visual diplay and its showing det when VTEC comes on.
My setup is a 2L DOHC VTEC turbo. Compression ratio has been reduced with a 2MM cometic headgasket and is sitting around 9.5-9.7:1.
My problem is that when vtec comes on the light shows detination but you dont here it on the knocklink headphones. The car is being road tuned so the timing still needs some attention. At the moment when vtec comes on the timing is set at 20.5deg btdc and 6psi of boost from vtec activated from 5800rpm to 7500rpm and the light flickers the whole time. A/F ratio is 11.7.
I am wondering if the knock light is picking up the extra noise the valve train is producing when vtec is turned on and thinking it is knock? Has anyone experienced this problem and is the a solution for me to sort this out.
Im stumped. Thanks for any help.
Re: Knock light visual displayPosted by Dtech Motorsport at November 27. 2011
Where is the sensor mounted and what type of knock sensor are you using where the sensor is mounted can have a big impact on noise heard.
also what sensitivity and frequency is the knock link set to?