Hi my name is nixie and I have 2007 supercharged cobalt ss, I live in colorado. I just have the k&n intake right now and I love it with a catback exhaust. I'm trying to get the borla exhaust cause the one I have now just sounds like a riced out Honda and then plan on the stage 3 kit but I am not sure if the zzp or the gm is better?? I heard good and bad things from both. I also plan on spraying 50 shot of nos or running e85 any suggestions?

 

I personally have the zzp stage 3 kit and I love it. Really wakes the car up. And I think the gm stage 3 requires AC removal while the zzp stage 3 doesn't. I would strongly recommend the pcm that is offered with the zzp stage 3 kit

 

The zzp stage 3 and gm stage 3 are 2 completely different animals. Everything from the physical pcm itself down to the parts involved are completely different. Do some research on the two setups first op, as there is quite a bit out there to be found, and make an educated decision from there.

 

Why is this in the dyno forum

 

You can't run E85 on the GMS3, go ZZP, 80# injectors. Just stick with their S2 kit and get a small pulley that add on HE doesn't do much.

 

this has been covered use the search button and educate yourself