raise or lower fuel pressure on a hot day?

axeman

Founding Member
Feb 9, 2001
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Elizabethtown, PA
i know weather plays a big role in HP. colder, denser air gives your car a few HP. so does that mean that you are running a little leaner? is it safe to assume that on hot days i could drop the fuel pressure down a few pounds and see a little difference?

i'm just trying to understand how someone could benefit from different tuning in different weather. got any advice? any web sites i could read up on?
 
Colder Denser Air gives you more power. If you think about it, why do you put a intercooler on a turbo/super charger, to gain more hp by cooling down the air entering the engine. Like vortech sells its power cooler which you fill with dry ice so you have a super cold and dense air flow. Just my 2 cents.
Jesse
 
correct me if i'm wrong, but the computer compensates during normal driving. i believe at WOT, the computer doesn't have much control. your tune has more control then. why would anyone even bother tuning thier car then? by that, i mean timing and fuel pressure.