my friend got a cobalt awhile back and has done a few mods to it now he's ready for more so what should he do next. goal is 260-270 whp
list of current mods

06 cobalt ss supercharged
gm 42lb injectors
gm stage 2 computer
2.9 pulley
one step colder plugs
k&n cold air intake
spec stage 2 clutch

 

Header/Downpipe, tune thats all you would need to hit around 250 flywheel, add nitrous and it goes up to 300 easily. and around 275 at the wheels. Matt 205 SS has 275whp and 274 tq with his setup.

 

COOLING FTW. CX Racing Heat Exchanger and Dual Pass Endplate w/Option B.

 

i dont think he's wanting to spray so i guess header and down pipe is next mod. whats the best bang for the buck. and also dous hp tune work well on these cars

 

yea hp tuners worked great for my car. no problems at all.

not to thread jack but im running a 2.8, 60#'s, lightning h/e, k&n cold air, n im waitin on my clearimage header 3 in downpipe no cat. how much of a difference would i see with a dual pass and option B? would i see more power or just more consistant power? and how much does option b cost?? thanx

 

the dual pass endplate with option b is 335 plus shipping from CED. Opt. B alone is 96bucks. I'm not sure exactly what you would gain per say. But you would be alot more effiecent (sp) and trust me cooler charge air makes a world of difference. I went from loosing by a car to my buddy to pulling a bumper on him from a 40-110 roll.

oh and that was just with adding a heat exchanger. i have yet to do the dual pass opt b but that is next on the list.

 

Cooling mods FTW

 

I will have to agree with the cooling mods.

 

for 335 plus shipping. why not just get a meth kit?? thats probably the best cooling mod and one of the best power options.