Getting rid of knock at high rpms
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Getting rid of knock at high rpms
I've been seeing knock counts at the top of 3rd gear and 4th gear ever since it warmed up outside. It was fine in the winter. Car is tuned on 93 octane 27/28 psi on FP red with 1000cc injectors. Tuner isn't responding in a timely manner to fix it so I plan to just play around with it myself. Is it best to drop boost and increase timing or trying leaving boost where it is and richening mixture? I'm getting around 11.1-11.2 the way it is now at WOT. I don't want to lose too much power and the car is knock free in 2nd gear. Using Grimspeed for boost control.
Last edited by 1fast97gsx; May 29, 2015 at 11:55 AM.
#2
I've been seeing knock counts at the top of 3rd gear and 4th gear ever since it warmed up outside. It was fine in the winter. Car is tuned on 93 octane 27/28 psi on FP red with 1000cc injectors. Tuner isn't responding in a timely manner to fix it so I plan to just play around with it myself. Is it best to drop boost and increase timing or trying leaving boost where it is and richening mixture? I'm getting around 11.1-11.2 the way it is now at WOT. I don't want to lose too much power and the car is knock free in 2nd gear. Using Grimspeed for boost control.
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So in your opinion less timing and more boost makes more power than less boost with more timing? At what AFR would you say it's too rich and we need to try something else? I've got it to 11.0 in the areas of knock and it appears to still be there. I was considering dropping the boost like 2 psi and trying for 11.4-5 again but I don't want to waste my time if there's a better way to go about it... sorry I havent been on here or messed with the car lately. Been on vacation / had things going on.
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