Has anyone seen any gain from doing this, im thinking about just putting a drop in k&n filter in and calling it a day. Also, would they airbox mod void your warranty, has anybody taken there car in for work with airbox mod?

 

If the dealership wants to be ****** the k&n could void you're warranty. Search airbox mod zzp and some others that do hp tuners have before and after results. And yes they had airflow gains. Not as much as with cai in some cases but cai's imo mess up ss/tc's more than help.

 

in no way could a k&n void ur warrenty. if they wanna make u think it can, pick another dealer, cause they would be full of crap. and Gm wouldnt void it for a k&n filter. The dealer doesnt have the power to void ur warrenty, only Gm does and they wouldnt for a k&n