X-pipe versus no X-pipe?
If running cutouts or open pipes. Cant see any point in an X-pipe though.
I ran my old TT RV8 with separate pipes, then added a balance pipe later. No idea on power, but with the linkup, it sounder much much better, and in general, was quieter. Id assume the same with an X-pipe.
Ive a dodgy DIY X-pipe on mine, that is fully open inside.
A friend has a DiFillipo exhaust on his Monaro, which has an X-Pipe. But its only really linked with a hole circa 7/8"-1" on the backs of the 3" bends where they join together to form the X.


