+20's

[2slowforu]

Has anyone ever tried +20s on there stage 3 glhs puter from fwd performance without messing with the fuel pressure?

[tryingbe]

Why? You want your car to run rich all the time?

[Dave]

I ran 20's on the S3 computer for a 2.5. You'll be fat as hell without an AFPR. The stock computer, being a T2 in your case, thinks it still has 33 pph injectors, now you're puting in 42pph injectors, unless Cindy changed the coding in the computer where it accepts +20's only, but I doubt that, so you'll be way to fat. Get an AFPR and bring the base pressure down. Start at 50psi static and work you're way down.

[BadAssPerformance]

What injector size and fuel pressure is it advertized to require?

IMHO all cals should be tuned for a certain injector size and stock fuel pressure or the 43psi the injectors were designed for. No cal should need to have a higher or lower fuel pressure to run, that variable should be left for fine tuning as needed.

I run 42pph injectors in my T2 2.2L Shadow with the MP CSX stage 2, although I have an AFPR I run stock pressure with 100 octane.

Not sure how much more aggressive their stage 3 is but I would think you can manage. If it dont work, go get an AFPR.

[tvanlant]

I ran +20s on both the stock GLHS computer and the MP stage II without a AFPR, and they worked fine. They were a little fat with the stock computer, but really not that bad. I think they would be fine.