Zach06CobaltSC

Currently I have 42lb injectors on my car from the GM Stage 2 Kit. I plan on having the following on my car very soon.

3inch custom exhaust with magnaflow muffler
3inch header
3inch downpipe with magnaflow cat
Injen CAI
Methanol Injection Kit
Dual Pass end plate with option b
Heat Exchanger
GM Stage 2 Pulley and Belt.

My question is will I be maxing out my injectors at this point, is this dangerous, do I need 60lbers, or am I fine with the 42lbers with those mods.

I would Like to stay with 42lbers and the stock pulley for now, and when I feel the need to upgrade, grab 60lbers, more meth, 2.6 pulley and a really good hptune.

Let me know guys, thanks.

rrutter81

it will lean it out a bit....

probably looking at 80% idc

Zach06CobaltSC

so then I will be fine with the 42lbers and the stage 2 tune? I don't need 60lbers correct?

QuikSilverSS

Your fine with the stage 2 injectors, I would recommend a 2.5" exhaust over the 3"!

RoAdsZ24

I agree, 3" is too big, you will loose some boost with that large of piping. 2.5" is ideal.

Zach06CobaltSC

The 3inch custom exhaust is already on the car as you can see in my sig. However I am still hitting 16.5lbs of boost on the stock gauge. I am getting ready to "go big" on my car so I will need the 3 inch exhaust. Hopefully I will be putting down some decent numbers when I am done. My goal is around the 300hp mark. This will obviously be with 60lbers and a smaller pulley. We will see how far she will go =P.

But as far as the injectors go, I will be fine with the above installed correct?

Area47

um. boost is a measure of resistance.

QuikSilverSS

^Exhaust gas velocity also comes into play^