Which would you recommend getting first? and what kind of horsepower gains am I looking at for each?

2007 cobalt ss/sc

 

The S3 H/E does not gain HP. The Heat Exchanger is used to help recover IAT2 temps when WOT and wont help with the fun factor until you pulley down. Only hp gainer is the CAI.

 

i say start with h/e first and then start adding hp

 

No need for cooling until you go to a 2.8 pulley, I was tuned on a 2.9 and did not need cooler according to iat2 temps until i dropped pulley again.

His only hp gainer is the intake and is a good first mod.

 

i get what ur sayin but i would just start with preventative mods that help the car, then start making it faster

 

it depends on what ur plans are for the future? if u are gonna pulley down to a 2.9 and run it quite often then sure u can go with the H/E I prefer my car running cool first and power second... but if ur not gonna go that way and maybe pulley down to a 3.1 or 3.0 and get bolt ons no need for it... but its how u want to mod ur car.

 

Get the CAI first then drop pulley sizes then get the HE

CAI = very loud whine < I miss that

 

I planned on doing CAI > HE > Full exhaust > pulley/injectors/tune

 

Well there u go

 

Would that be the best route?

 

That could work. I did intake then all exhaust with H/E at same time.

 

Horsepower w/ CAI + full exhuast? ZZP long tube header and ZZP 3" cat back