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Discussion Starter #1
I have two quick questions. One is about the VPC idle knob which richens or leans the car while under 1200 rpm. Won't the ecu compensate for changing the fuel under 3500 rpm?

The second question is about the cam gears. If I tune my cam gears while running 15 psi of boost, will I have to re-tune them when I want to run 20 psi? Since cam gears affect intake and exhaust timing, won't more boost change the ratio?

Thanks.
 
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