08-17-2020, 01:27 AM | #1 |
#savethemanuals
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What mid-pipe maintains secondary cats?
I am assuming the N55 does?
Are there any other options for maintaining secondary catalytic conversion with a non-stock mid for better sound. Thanks. |
08-17-2020, 03:53 PM | #2 | |
Colonel
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Drives: e82 1M, f87 M2cs
Join Date: Nov 2011
Location: Tri-Cities, Washington
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Quote:
If you are needing to pass smog test regularly, I'm pretty sure you'll need to use the OEM pipe. If not worried about emissions/smog testing, go for the MadDad! FYI, there is no O2 sensor after the secondary cats so a mid pipe with no cats will not throw a code or interfere with cat readiness. The only way it would potentially fail is if your inspection includes a sniffer test.
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1M track toy mods: BMS chargepipe, BMS OCC, ADE FMIC, ADE motor mounts, MadDad/Lightweight Ti exhaust, ADE custom oil thermostat/cooler, custom MHD tune, F10 550i clutch, Ohlins R+T, Vorschlag camber plates, M3 'vert FSB with Turner endlinks, Stoptech Trophy BBK.
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08-18-2020, 07:22 AM | #3 |
Second Lieutenant
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Only midpipe that i can think of could be Supersprint, they tend to offer a lot of midpipes / link pipes with cats. Maybe just have a look
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