Ok guys considering my mods what should i stay with? I just recently put my factory h pipe back on so i could take my car into ford for the t3650 fix. (afraid they might void my warranty) but this was the 1st time i had the factory h pipe on with my 4.10s AND WOW!!! the thing feel likes it has alot of low end torque...but top end went to hell! With the upr it felt the exact opposite...low end was crap but high end was good. Is the upr worth keeping on? i would like to see a dyno graph comparing the two.