Say, your at 8.5:1, and you want to bump your C/R to 9.5:1, will you have to tune for more fuel?
I am looking at the volume being compressed. Its still the same, just compacted in a tigher area. I guess I am looking at it wrong. If you turn up the boost, you are actually increasing the volume of A/F in the cylinder, so that is why its plan to see the need for more fuel.slo5oh said:Please tell me you're not asking for yourself... rule #1 with a blower or turbo: lower compression with higher boost is better.
but, yes, if you take a 8.5:1 motor built up and boosted or not swap it with a 9.5:1 motor with the same heads/intake/cam/power adder(s)/etc you will need more fuel because you will be making more power. The computer will compensate and add fuel during normal driving, but once you go to WOT it's all about the computer mapped fuel curve.