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10-08-2020, 02:58 AM | #1 |
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Questions for those in the Bay Area with modified exhaust
Bought the Z4M a year ago or so, and now finally decided to get an exhaust for it. Read the Ultimate Exhaust guide, and really liked the sound of the SuperSprint X-pipe and Race Muffler setup by Mfanatic325.
Question is... Where do you smog your car after this? Can smog station fail you because the car is too loud? Do you swapout the X-pipe each time you go smog the car? I had a wrx with hi flow catted downpipe, and a Borla full cat back exhaust system which was not that loud, just nice low rumble. Never had a problem with sound, it's always visual with the catted down pipe... But for the Z4M, I can't gauge how loud it is since I haven't heard it in person... Any insights will be appreciated! |
10-08-2020, 08:04 AM | #2 |
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I'm not from California so not too knowledgeable about smog stations/test, but I will touch upon your concerns...
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fryh1n5.50 |
10-08-2020, 01:37 PM | #4 |
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I tested my Z4M from SMOG at a regular neighborhood spot in Hayward, CA. The car had an AFE intake and Stromung mufflers on it at the time. The car easily passed the OBDII test (no sniffer on our cars - it would pass that too...).
The tech owned an E46 M3 and knew my intake was aftermarket and dinged me on visual and suggested I swap the intake back to stock before retest. Given his knowledge of the platform I am positive he also knew the exhaust was non-OEM. It leads me to believe they only really care about the catalytic converters and any pre-cat items. Just my 2 cents. Test was $40 (retest is free), worth a shot before you swap items in or out. |
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fryh1n5.50 |
10-08-2020, 04:16 PM | #5 | |
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Quote:
very interesting, so it seems like X-pipe does add volume if the cats are modified. |
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10-08-2020, 08:24 PM | #6 | |
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I have a super sprint X-Pipe collecting dust Most useless and expensive purchase I have ever made. |
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10-09-2020, 12:09 AM | #7 |
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I can buy it off of you, but shipping may kill the deal. Let me send you a pm.
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11-14-2020, 12:21 AM | #8 | ||
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Quote:
You still have it?
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VF Supercharged 03? E85 Z4
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11-14-2020, 01:16 PM | #9 |
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No, it finally sold. very cheap, unfortunately for me.
Last edited by maupineda; 11-16-2020 at 12:23 PM.. |
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