oh nevermind there he is !!! lol dude you are like the ghost of cobalt past...

 

JMC007 how do you know his A/f went up that high? Reason I ask is I've seen a leaky exhaust cause that.

 

guys big problems tonight first of all there is a hissing coming out around the throttle body i think it is a vacuum leak but i cannot confirm this (but when at idle i hit the gas something under the supercharger closes and the hissing goes away but comes right back)also the car sputters when i gas it sometimes or sometimes sputters like the clutch is going on the shift from first to second and a little from third to fourth, but the clutch is fine i am sure there is a problem with the spark plugs and i am getting them on saturday also why would you say two ranges colder is not good that is whatt zz performance recommends. please help guys i was willing to be the first to do this so help me out.

 

I've seen a Stage 2 kit datalog with the 3" pulley and injectors were already maxed, so with the 2.8" they are maxed for sure. Don't forget the stages car runs at 7000 RPM !

 

guys all problems fixed i took it to dealer for the hissing sound we located it as a vacuum leak in the injector seals it seems an o-ring broke on one injector seal causing the whole car to act funnny but problem fixed and the car is fast no lights hopefully the dyno will be open soon!!!!!

 

I am dying to see what your setup brings...

-Rich

 

ditto, get to the dyno!

 

Keep us posted as I do have a 2.8" pulley dying to go ontop of my crazy stage 2.

 

with just stage 1. will u get the 7000 rpm redline?

 

haha sounds like me with soem issues after stage 2, my exhaust is rattleing like a biach after i raced my buddies ss, i have the gmpp sport exhaust, another fellow on this site had the same prob with his gmpp rattling, it turns out there was a leak causing vibs against the heat sheild so i think thats my same prob or a few bols that i didnt tighten enuff when i straighted the tip, thanks to doc for that tip but other than that she feeels like a whole new different car, must be nutts with a smaller pulley, glad everything worked out, lookin forward for those numbers

 

c'mon dude...

 

yeah Your cats not gonna hold up to the heat + now im sure your runnning leaner than a regular stage 2 kit and cats don't like the added heat from running lean. No biggie get it fixed under warrenty or..............Run race gas through it till all the cat gets burned out. Don't do the second choice unless you have a stright through design muffler though or else if you try that on the stock muffler the cat burn out pieces will just clogg the muffler. Hehe no one scold me for my second suggestion its just another option.