CrimsonGXP

Long story short my friend bought a supercharged ls1 GTO and got all of the factory parts. He's giving me the ls6 intake with the fuel rails, 28lb injectors (vs the 26lb ones in my 2000 ws6), and valley cover for a good price. Will I be okay running untuned for a while? I want to get a tune after I get longtubes and don't want to do it twice. I know it will run a little rich with the slightly larger injectors but will it be enough to cause me problems?

G Atsma

Actually your O2 sensors/MAF might adjust for it, but I'm not positive about that.

SlasherVRGR

iTrader: (1)

They'll adjust during cruise and normal driving, it'll be pretty fat in PE though.

1bdbrd

iTrader: (12)

I would just stick with the stock injectors from your car. No reason to upgrade those unless you need to.

CrimsonGXP

I mean I'm getting them for free and they are basically new so I just thought I might as well.

Toes

iTrader: (1)

Try putting the injectors in an see what happens. Easy enough to swap back to the old ones. Might even out going a bit lean swapping on the ls6 intake.

CrimsonGXP

Thats what I was thinking. I'll hopefully have headers and a tune by the end of summer anyway

ss.slp.ls1

iTrader: (36)

^^^+1. Keep the newer ones in the garage for now in case your stock ones fail for some unlikely reason. By the time you make enough power to necessitate larger injectors and a tune, you'll probably need to step up to some 36 or 42 lbs injectors.

jhshnh

rpturbo

iTrader: (47)

THIS!!!! Ill say it again, the GTP stock injectors drop right in, just need a tune. They flow 42#'s at LS fuel pressure. Make sure you have a decent fuel pump to support the fuel system. Even the 28.8's are a little small once you have a couple mods. I was generally running 110% IDC with those on a bolt on. The GTP injectors are in the high 60's.

icyws6

So what happened when you put the new injectors with the ls6 manifold?? did it have problems?