i bought a 2010 cobalt ss and its got a k&n drop in filter and a gms1 im looking to get it tuned now what are these motors good for on stock internals?

 

24 psi boost & up to 400 hp or so. Too much boost will damage the ring lands.

ZZP bent the stock rods somewhere north of 400 hp with a turbo upgrade & many bolt ons.

Stock turbo will make ~330 whp, ~380 wtq without issues.

 

Sounds about right.