Stock Exhaust (Minus Res) and OBX DPhas anyone installed an aftermarket downpipe and exhaust and then cut the resonator out? I'm trying to figure out if my combination of downpipe/exhaust minus the cat would sound better or just drone. Anyone have an obx downpipe and EST sport catback (or other resonator-less catback)? If so how do you like it compared to when the exhaust had a resonator?
Depends on pipe size. If going 3" all the way back then the difference is from 2.25" to 3" in exhaust gas flow. An aftermarket DP will flow more then a complete stock setup but it will still be 3" DP back down to 2.25" to the stock exhaust I believe. We replacing the res all your doing to welding in a straight 2.25" pipe so it will flow more but it really wont make any real world difference.how much better is the flow of an aftermarket exhaust and dp when compared to doing a res delete and aftermarket dp?