Hey everyone! I recently purchased my 2nd SS Cobalt. Of course we know that clean(ish) ones are hard to come by and they haven't been very easy to find here in California.

I found an 09 SS Cobalt Sedan with an alleged stage one upgrade at a car dealer in Fontana. At least for me, they are harder to truly identify than dealer stage upgrades on the Supercharged models.

So a couple of questions here. How far is the tailpipe supposed to stick out of the bumper? How can I confirm that my cobalt does indeed have a GM Stage One upgrade?

Any help would be appreciated. Also, if this happens to be a discussion already had, I'd love a link and I can get my info from there if you already happen to know! Thank you!

 

Should have a tune flash sticker in the engine bay

 

Also, on top of the intake manifold, look at the map sensor(sensor closest to right side). If it has 2 bolts, it's stock, if it only has one bolt, it has the stage one sensor upgrade.