06-05-2019, 01:10 PM | #1 |
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Catted Downpipe Options
Hi guys,
I didn't see a specific thread with Catted Downpipe options for the G01 X3 M40i and was wondering if someone could create a list for others who may want exhaust. I know of .. 1. VRSF 2. Supersprint 3. Evolution Racewerks 4. CG precision 5. ? Thanks
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06-05-2019, 01:19 PM | #2 |
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CG precision is the one I'm going to look into when I get there.
Last edited by Torinalth; 06-11-2019 at 01:02 PM.. |
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06-05-2019, 02:48 PM | #3 |
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Do they make one for the X3 M40 i?
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06-05-2019, 03:02 PM | #4 |
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I'm pretty new to the down pipe mod arena. Is there a particular reason why one would choose a catted versus non-catted down pipe or vice versus?
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06-05-2019, 06:12 PM | #5 |
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06-05-2019, 06:19 PM | #6 | |
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why you'd want a catted pipe are a few reasons: some people don't want to swap back to stock if their location required them for emissions testing. if you remove the cat you will eventually throw a check engine light, but you can tune around that. in my case its the last 3 that make me not want to go catless: there is a distinct odor when you go catless, when you run richer you will get black accumulation that is much harder to remove that stains the car and exhaust at the back tailpipe, and its louder going catless. so for those like me willing to give up 2-5 HP for no staining, slightly less noise (though still more than stock), and eliminating the odor while still passing emissions.... there is a catted offering. Some just don't care, and that's why they sell catless versions. |
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06-05-2019, 08:07 PM | #7 | ||
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06-05-2019, 11:16 PM | #8 |
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I don't know anything about this stuff, but would like to educate myself.
https://cdn11.bigcommerce.com/s-gd6o...1544542073.jpg I assume that picture is stock vs. aftermarket catted downpipe? If so, what's the difference? Looks like basically the same part to me. *I have no idea what I'm talking about here. |
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06-10-2019, 10:07 PM | #9 | |
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The smell is noticeable on the V8 cars like S63TU (M5/M6, X5M, X6M) when idling and that's also due to the fact that 91/93 oct releases that smell easily fixed with E30 or something One of my close friends @fsociety has Downpipes on his 17' M3 Comp Pkg and there's 0 smell even on idle in his car because he has stock exhaust. In my opinion if your state doesn't require yearly inspection, the catless downpipe is better in the pocket, sound and gains! Depends on your location I may be able to suggest a Custom Fabricator who was the first in the world to make F90 M5 (Downpipes, Midpipes, Intakes), M550, and now new M850 |
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06-11-2019, 12:36 PM | #10 | |
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06-11-2019, 02:34 PM | #11 | |
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06-11-2019, 03:31 PM | #12 | |
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06-11-2019, 04:23 PM | #13 | |
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06-12-2019, 01:19 PM | #15 | |
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Check this out https://www.realoem.com/bmw/enUS/sho...diagId=18_1289 Has 1 front muffler, then rear exhaust muffler which is 2. Compare to the 340 exhaust https://www.realoem.com/bmw/enUS/sho...diagId=18_1174
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06-12-2019, 08:21 PM | #16 | |
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06-28-2019, 01:15 PM | #17 |
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BUMP....
Any other MFG's anyone can recommend? Thank you.
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06-28-2019, 04:23 PM | #18 |
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Catless lol CTS Turbo , especially since you have Stage 2 tune
https://www.bm3tuning.com/g30/n55-ca...downpipe-me7g5
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06-28-2019, 10:04 PM | #19 | |
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07-07-2019, 07:24 PM | #20 | |
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07-08-2019, 12:29 PM | #21 |
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