ok so beside getting a new intercooler, new exhaust, newair intake, and a new downpipe. all hahn by the way. so what else is there to upgrade on this car? any other kinds of mods i can put on? oh and i have an 09 cobalt ss turbo

 

tune

 

charge pipes, OTTP rotated mounts....

 

as for bolt-ons and with what was said in the above posts, thats it.... next step would be a tune, stage 3 clutch for all that power, lighter weight wheels... OZ superlegerra's or Enkei's new wheel FPS1? (I forget what its called.) Both those wheels weigh about 17-18Ibs a piece. stock wheels weigh 26-28Ibs a piece. You can do appearance modifications... projector HIDhead lights. or just HID headlights. spoilerless trunk, tint, new slotted and drilled rotors <-- these are performance too), new ceramic pads. TWM short shifter, solid shifter bushings, aeroforce interceptor gauges (1 or 2) with new gauge pod.

After those which happen to be all bolt on items, you can take it to the next step.
Port and polish the head, I hear they give good numbers when tuned for it. Upgrade pistons and rods if your planning on making your car a weekend monster. there's also the lightweight flywheel, wouldnt bother with it unless you destroyed the stock one somehow. thats all I can think of.

 

Why all Hahn stuff? So overpriced! Why not do a BPV spring upgrade?

 

other than that turbo upgrade

 

BPV spring has shown to be a problem and is not recommended.

 

Please elaborate because this is the first I've heard of this.

 

coilover

 

So many people that had the Dejon BPV Spring switched back to the stock spring, I think the spring was just too firm and it caused compressore surge but I'm not 100% sure of the reason.

OP Do a driver mod or sign up for some auto-x, probably the best mod you can do to any car bar none.

 

dang i wish i could blow alot of money on my balt

 

is not at all a problem. works just fine.

 

Stock spring was said to have quicker spool and no compressor surge, unlike the upgrade. Or at least that's the last I remember reading.