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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications X Pipe for 550?
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      08-25-2011, 11:47 AM   #1
gray550
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X Pipe for 550?

Does anyone make an X pipe specifically for the 550i? I want to improve the exhaust sound and delete the secondary cats.
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      08-25-2011, 01:18 PM   #2
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Supersprint makes x-pipe for the 550, but there are no secondary cats to remove.
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      08-25-2011, 03:13 PM   #3
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I thought the exhaust system had DP's with primary cats, then secondary cats followed by a resonator, followed by two mufflers?

I saw the Supersprint X pipe but that eliminates the resonator and I want to eliminate the two cats (or whatever they are) before the resonator but after the DP's. Might need a custom X pipe to achieve this as I can't find any existing ones.
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      08-25-2011, 03:35 PM   #4
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I'm not the resident exhaust expert here at JleviSW but if you call up our toll free line I think someone can guide you.
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      08-25-2011, 03:49 PM   #5
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Quote:
Originally Posted by Jlevi SW View Post
I'm not the resident exhaust expert here at JleviSW but if you call up our toll free line I think someone can guide you.
Thanks
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      08-26-2011, 10:25 AM   #6
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Quote:
Originally Posted by gray550 View Post
I thought the exhaust system had DP's with primary cats, then secondary cats followed by a resonator, followed by two mufflers?

I saw the Supersprint X pipe but that eliminates the resonator and I want to eliminate the two cats (or whatever they are) before the resonator but after the DP's. Might need a custom X pipe to achieve this as I can't find any existing ones.
On my Supersprint exhaust, there are nothing left of the OEM system, but the downpipes.
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      01-31-2012, 09:57 PM   #7
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any significant sound difference with xpipe and stock exhaust...
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      01-31-2012, 11:47 PM   #8
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Quote:
Originally Posted by gray550 View Post
I thought the exhaust system had DP's with primary cats, then secondary cats followed by a resonator, followed by two mufflers?

I saw the Supersprint X pipe but that eliminates the resonator and I want to eliminate the two cats (or whatever they are) before the resonator but after the DP's. Might need a custom X pipe to achieve this as I can't find any existing ones.
This is correct. I had the AR design catless downpipes installed with the eisenmann race mufflers, loved the sound but it had a moderate drone between 1600-2000rpm. I removed the secondary cats and replaced them with the magnaflow X pipe muffler(12469 is the part # for the 3" but I used 2.5") and kept the stock resonator. Volume went up ever so slightly but drone is gone. It's perfect now.
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      02-01-2012, 02:33 PM   #9
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Quote:
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any significant sound difference with xpipe and stock exhaust...
I would like to know also...
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      02-01-2012, 02:34 PM   #10
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Quote:
Originally Posted by Jimefam View Post
This is correct. I had the AR design catless downpipes installed with the eisenmann race mufflers, loved the sound but it had a moderate drone between 1600-2000rpm. I removed the secondary cats and replaced them with the magnaflow X pipe muffler(12469 is the part # for the 3" but I used 2.5") and kept the stock resonator. Volume went up ever so slightly but drone is gone. It's perfect now.
DO you have any soundclips?? Would love to hear it!!
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