need help with finding some performance mods that wont void my warranty.(if thats possible)

mods i already have are:

gm stage 2
k and n intake
gm performance exhaust

anything?

 

gmpp honed extrude manifold

 

That and a nate's 2.9

 

what horse power will that put me at approximately?

 

I'd say ~235whp

 

60s injectors

 

not sure why everyone is so paranoid to do exhaust. I asked mutiple dealerships, and talked to the service manager at the place I bought my car from, and they are perfectly fine with you installing an aftermarket header, exhaust, ect......They just won't warranty damage that can be directly proven to be caused by your aftermarket exhaust, which would have to be pretty rare.