I have a 2008 GT 4.6 3v stock motor, just added 4.10 gears, automatic
sometimes the car falls on its face (before the 4.10s) and seemed like its losing power, no codes have been thrown.
I installed an offroad x pipe. all this occurred after the offroad x was installed.
I disabled all the rear o2 codes. is there anything else I might need to do?
I'm new to this. My friend actually owns the HP Tuning software, he tunes LS only. SO we are both very new to ford. Any help is appreciated.