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post #1 of 6 Old 30th October 2016, 08:35 PM Thread Starter
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x-pipe resonator delete question.. stock H-pipe???

I can't find it anywhere .... do you guys remove stock H-pipe as well when installing x-pipe instead of a stock resonator? I think its h-pipe which no one ever mentions. If so any negatives of having both?
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post #2 of 6 Old 30th October 2016, 10:39 PM
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post #3 of 6 Old 30th October 2016, 11:01 PM
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Yeah its one or the other, not both. I prefer a x-pipe for better flow.

My guess would be a H pipe is cheaper to manufacturer and makes little difference hence why bmw uses it.

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post #4 of 6 Old 30th October 2016, 11:02 PM
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Stock Section 1 = Secondary Cats
Stock Section 2 = Resonator AND H-pipe
Stock Section 3 = Exhaust/Mufflers

Most aftermarket
Section 1 = secondary cat delete (straight pipe) OR resonator
Section 2 = X-pipe
Section 3 = Exhaust/Mufflers


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post #5 of 6 Old 31st October 2016, 01:08 AM Thread Starter
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All I'm doing is removing resonator and welding x-pipe instead and i was trying to find out if i should remove stock H-pipe or not
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post #6 of 6 Old 31st October 2016, 08:15 PM
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I removed my h pipe, added the x pipe, which replaces the resantor, didn't make a big sound difference till I messed with the muffler's.
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