Quote:
Originally Posted by FRS Justin
Hey Kris didn't you lower the compression?
for the EXACT same combination of parts...a higher compression motor draws harder on the intake, and thus has more vacuum.
the bigger the difference in compression...the bigger the difference in vacuum...
1-2 inches of vacuum per point seems realistic...
I would check fuel trims for signs of a vacuum leak not the gauge |
You beat me to it. I thought of this yesterday while working on the jeep. He changed his comp so 14-15 sounds about right.
I know your looking at fuel trims but hows the MAF? Is it solid readings when at idle or is it all over the place?
__________________
2014 Subaru BRZ
FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe