Re: Backpressure loss while dumping exhaust?
backpressure is nothing, it isn't needed nor does it exist. If you are going to upgrade your exhaust to get more of the gases OUT of the engine, why would you need a pressure buildup going in the opposite direction? You shouldn't lose anything if you dump the exhaust before the rear tire. However, you still need ample exhaust piping for the exhaust gases to cool, and contract while inside the exhaust piping, as this will create a vacuum and help speed up the flow of the exhaust gases; this is in no way "backpressure" as people try to refer it to.
2006 Fx4 Level 2 with a 5spd, Superlifted on 33's.