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Yesterday got my girlfriend a 08 ss we traded in her 07 5speed cobalt. im a diesel kinda guy but have much love for the cobalts especislly this one! I could tell it had some aftermarket parts on it when we checked it out at the dealership. After buying it we was able to get ahold of the previous owner on the phone, found his number on recipt in glove compartment. I called to ask what all aftermarket it did have. He named off a bunch of stuff i wasnt sure what was lol he did say it had a zz performance 400 kit said i could find it on their website for all the details, but couldnt find it. Pretty sure it has a clutch in it, its quite jumpy, just assuming this cause the trucks do that with bigger clutches. But it has a zz performance stainless plate on top of the motor. Different charge pipes air intake manual boost controller hahn exhaust tial wastegate and blowoff valve. So does anyone know of this 400hp kit? And if so what it consist of?

Thanks guys
 

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I've not heard of a 400hp kit from ZZP for a stock turbo SS . They have a turbo called a ZFR that would put it at around 400whp . Some people do a maf relocate so they can run a true blow off valve instead of the stock turbo's bypass valve ....but it isnt for performance ....more for sound . The manual boost controller has me curious because the stock turbo can be controlled threw tuning alone so there might be a chance that it has an upgraded turbo on it . cobalt ss dot net would be the place to look , ZZP is on there all the time . Good luck with the car !
 

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if it has a wastegate, iam pretty sure it has either a 252 or 256 turbo, either of those turbos will put out 400hp. and it cant be a zfr because those are internal wastegated.
 
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