When I did mine, X-pipe didn't cross my mind and I went with straight pipe/small resonators. The sound from inside the cabin is good, but you can hear the exhaust pulses left/right/left/right from behind the truck. The x-pipe will smooth out the sound/tone from the exhaust and the equalization of exhaust pressures will help too.

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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

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X5 pics

RIP 4.6is.....

2003 4.6is