I think I have a problem. I have a 2003 gt w/ auto trans. It doesn't feel like the trans. is shifting right. Im not sure if its from the offraod x-pipe or what. It feels like im loosing pressure on the gas pedal whenever the car shifts gears. Whenever the car shifts gears its a jerking motion. I dont know if I should take it to the dealer because i dont have any cats and they might try to say that it is coming from that. Can they void your engine warranty for taking of your cats or just the exhaust warranty? If taking off the cats justs void the exhaust I will take it to the dealer b/c it is still under warranty.
have you checked your fluid level, make sure the engine is running in neutral when you do it. there is a cold engine fill line and a hot engine fill line, make sure you are looking at the right line, if your fluid levelis low the tranny can act like that.
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1997 thunderbird 4.6sohc 14.2@ 97 mph -75hp wet nitrous, 4.10 gears and eaton posi unit, cold air, custom manifold back catless exhaust, diablo sport chip(changed rev settings, timing, and trans pressures, etc.), msd 8.8 wires, msd digital window switch, ngk tr-6 plugs, drilled and slotted rotors. and 1200 watt alpine sound system, wideband dataloging o2.
-89 5.0 LX convertible, future project car
-2001 dodge ram 2500 cummins diesel, 5speed, 4x4.
Auto trans. not shifting right. 
