Hey would a stp intake and exhaust that was installed by the dealership void my warranty? The issue is that i have a problem with my car so i brought it in to a dealership. They told me that aftermarket parts is denying me the help they could give but the only part i have is a intake and exhaust that was installed by a dealership when i purchased my wrx. Also the dealership im working with is not the same dealership that i bought my car from(the other one closed down). I was wondering if anyone knows if that is true or they just BSing me on that.