What's up. I have a '07 Cobalt SS/SC... and my car had the GM Stage 2 kit.

Now i have cold air intake, a 2.9" pulley, heat exchanger, and 1 step colder spark plugs.

My question is, how much would a tune help my car's performance? Would it be worth it to spend the money now, or should I wait until I upgrade again (2.7 or 2.8, 60's, dual pass, etc.).

What do you guys think?

 

an aftermarket tune is better then the GM tune. as long as you get it from someone that knows how tune the car properly.

 

If you are planning on upgrading to larger injectors (recommended), I would wait. The 60lb injectors/2.9 or 2.8 pulley seems to be a pretty good combination.

 

Might as well wait tell you get the 60lbers and a smaller pulley but yes it is REALLY worth it. Hit me up if you need one .

 

^
yes I should know by the way Zach car still pulling hard

 

Good to hear bro! If you get meth any time soon let me know, I will be driving back down to chicago for a few clients soon .

 

Indeed I shall sir I'm planning on doing my dual pass and 60's with2.8 hopefully soon before summers over I'll let you know . Funny thing is I've had this dual pass sitiing in my closet for over a year lol just haven't had the time to get it done by there's only 1 person I trust to do it he's worked on my car numerous times I'd have to give him a call but I know it's a time consuming job with option b

 

Also, if I go with a 2.7" pulley, would a heat exchanger with a dual pass be enough cooling or would I need to get meth?

 

I wouldn't run anything under 2.8 without meth but thats just me.

EDIT: And to the OP, if you plan on upgrading to 60s or a smaller pulley sometime in the near future, just wait on getting a tune. You already have a decent one so just deal with that until you get the new pulley/injectors.

 

id get it tuned now unless you are getting the other parts tomorrow or something... the car is cool now but a beast when its done correctly