Alright well I've done a lot of research about this topic and the results that I've seen on many dynos is almost equivalent to the GM stage 2. Is this because of the canned tune? If so what kind of numbers should a person see with a custom tune via hp tuners? I would imagine them to be closer to 270 than 245 with a smaller pulley, bigger injectors, and all those cooling mods!

 

Should be around 245 whp...E85 will get you those 270 numbers

 

The average of 2.8" with 60's with cooling mods and fully bolted with HP tuners is about 250-260

 

Unless you're running e85 or meth, you probably won't be seeing anything over 260

 

Gm kits have canned tunes too I think

 

Hey guys im driving an 07 cobalt ss sc and im going into the stage 3 i was just wondering how reliable zzp's stage 3 kit is, and what size injectors i should go with, any information on this kit will be grealy apreciated, thanks

 

Pretty reliable. Easy install too.

Get 60# injectors if you plan on taking the car further with mods

 

Injector size really depends on what pulley size you go with. To be on the safe side, just go with a 60# injector just so you have some head room if you ever decide to go down another pulley size in the future.... that is unless you plan on running e85, then you may want to consider 80's.

The kit itself is pretty solid, but the tune is a tad conservative due to it being a canned tune. I'd personally rather see a more conservative tune like that though when you're talking a canned tune like this. I've looked at another vendor's canned tune that is just flat out wayy too aggressive for not being a custom tune. There's some power left on the table with the tune that comes in zzp's kit, but it's also safe and more reliable imo.

 

i love the zzp stage 3 kit. was an easy install, had it on for over a year and other than needing to be custom tuned cuz it runs a lil rich, haven't had any problems. highly recomend it!

 

It's straight up UNRELIABLE. Get a real tune ASAP. My buddies Redline was running retarded as hell.

 

lol.... right....

 

sounds like installer error.

 

its not unreliable, not at all, but you lose alot of power with the zzp tune, that you could have with a good tune! Go with 80s btw, you'll eventually want them, I upgraded later, e85, 284 to the wheels.