Need some exhaust advice. With a DE motor, T25, FMIC and 370 injectors @ 7psi, and 2.5" downpipe, how much HP am I losing if I go with a 2.5" exhaust vs. a 3" exhaust. Both systems would be mandrel bent. I'm trying to decide on a new exhaust system and most people are telling me that with this set-up, a 2.5" will suffice. I kinda like the prefabbed Courtesy b-pipe. Thanks!

Romeo
95 turbo SE-R

it depends on what your goals too if you are going to stay with that setup you should be ok with a 2.5 but there might not be as big as a price difference so maybe you should go with the three inch, the three inch negatives are that its not as good as lets say a 2.5 inch when the turbo is not spooling but with a t25 the turbo spools up real fast so maybe you would want to go with the three inch, just know what your goals are going to be and how much you want to spend and then decide.
Sean