Originally Posted by jonnyr1984
If you do it, you need an x pipe, plain and simple. You wont have enough back pressure, and you cant check it, unless ofcourse you can bench flow your heads (not headers) at your house. X pipe it and run duas that way. You go true, all you will do is lose power. I have an X in mine and I have reversion anyways (clicky poppies when I lift off the gas).
X pipes do not increase or reduce back pressure.
Back pressure can be checked with a pressure gauge tapped into any part of the exhaust system.
X or H pipes help to tune the exhaust pulses between banks, but it is not a necessity.
All IC engines have reversion.
True dual exhaust will not lose power on a V type engine unless the pipe diameter is too big for the engine's operating range. Bigger is not always better.
Rule of thumb for V-6 is 2" ID Single or dual.
Bench flowing heads has nothing to do with checking for back pressure in your exhaust system.