03-19-2020, 12:03 AM | #45 | |||
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I would rather do a mini cat if I could where the spacer itself has like a mini cat in it and actually does filter some of the gases and provides a better signal to the post 02 sensor. Sometimes with spacer alone you can still trigger a CEL but I don't have personal experience with that |
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08-20-2020, 01:17 PM | #46 |
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So without a downpipe is a tune worth it?
I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?
or should I forget about a DP install since its a lease? |
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08-20-2020, 07:37 PM | #47 | |
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To take advantage of the Catted Downpipe or catless Downpipe a tune is recommended. I had my Catted Downpipe on for like 7 months. Other than a CEL and more exhaust noise and burbles I haven't had any issues. With a tune you can code out the CEL for 02 sensor related faults |
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08-20-2020, 08:49 PM | #48 |
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If you don't want to do DP, piggyback may be one of your option.
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08-27-2020, 11:48 AM | #49 | |
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I'd like to do the DP
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08-27-2020, 12:12 PM | #52 |
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08-27-2020, 12:52 PM | #53 | |
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I would say 1-2 hours, depending on your skill.
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09-02-2020, 02:53 PM | #54 | ||
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09-02-2020, 09:40 PM | #55 | |
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09-02-2020, 09:57 PM | #56 | ||
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09-02-2020, 11:56 PM | #57 |
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09-03-2020, 10:52 PM | #58 |
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2020 with CTS catted downpipe
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10-20-2021, 11:20 AM | #59 |
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08-20-2022, 02:00 AM | #60 |
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Aftermarket Downpipe CG Precission DS-1
If anyone is interested, The CG Precission DS-1 downpipe for B58 engine fits the X3m40i. I have just installed it and it sounds so much better than stock.
The DS-1 is a 200 Cell Catted downpipe. It also guarantee no CEL which is great if you all dont want to put a tune to get rid of the CEL. Pretty easy removal and install. I recommend geting a new gasket as when I tried reusing mine, it was flaking off and kind of sketch, but it still worked. Better be safe than sorry. I cant upload video clips, but it sounds insane Link to where i bought the downpipe - https://x-ph.com/cg-precision-ds-1-h...npipe-bmw-b58/ Link to original post images - https://x3.xbimmers.com/forums/showthread.php?t=1948074 |
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01-20-2023, 09:07 AM | #61 |
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Does anyone think it's worth it to upgrade the downpipe on the B46? I feel like anytime there's a turbo having better exhaust flow always helps. Maybe it's not as big a gain as on the B58, but for $280 seems worth a try. I figure the downpipe, a good intake, and a Stage 1 tune should hopefully give me close to 50hp.
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01-21-2023, 11:02 AM | #62 |
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I've read that using a 400 cell catted downpipe won't trigger the CEL.
Active Autowerkes out of Miami makes one: https://store.activeautowerke.com/pr...atted-downpipe The ones that are less (e.g. 300 cell and 200 cell) will still trigger a CEL. Anyone else confirm/know this to be true? |
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01-21-2023, 11:16 AM | #63 | |
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If you use a low-quality 400 CEL cat, it will still trigger the check engine light. Active Autowerke uses GESI cats; these are the highest quality cats on the market (also the only ones that are EPA approved). They used the 300 GESI cats for some time without any issues, but on the newer chassis, they started triggering the check engine light. Active replaced all the ones that triggered the CEL for free and now only uses the 400 CEL GESI Version 2. No issues with hundreds of them sold, maybe thousands at this point.
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01-21-2023, 12:06 PM | #64 | |
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01-21-2023, 12:29 PM | #65 |
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The active autowerke downpipe is the best option in my opinion.
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02-27-2023, 09:48 AM | #66 |
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