Quote:
Originally Posted by nycplumber
The IPE F1 x pipe was famous for its sound and infamous for its power loss; with that said I would gladly give up 10hp for a much improved symphony. Especially if it gets rid of the rasp
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The double X has more bends and looks like more restrictive flow. That might lead to more of a loss.
Curious to see how the before/after dyno looks.