thermal dp question

DUDE!!!... yes the reason your car is stuttering is beacuse taking off the exhaust affects the timing.... belive me... i thought i was gonna hav to tear my distributor off and redo the brackets cuz it was off so bad when i had no exhaust and i didnt think that would matter... but i took it to the exhaust shop and the timing was near perfect when i got it back.. i asked them if they'd touched it but they said no, and that the exhasut system really does affect timing