11-07-2022, 01:59 PM | #1 |
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Can you run stage II with high flow cats?
I didn't want the raw gas smell so I am installing high flow catted pipes, am I safe to go to stage II tune on BM3? My understanding is that the stock cat's shouldn't be run stage II but these are much higher flowing cats.
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11-07-2022, 02:01 PM | #2 |
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I've used BPM Sport with Turner HFC. I let them know and they sent me a Stage II tune without issue. I can't imagine there would be an issue with BM3, MHD, or other custom tune
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11-07-2022, 07:44 PM | #3 |
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I've run BM3 Stage 2 93 with stock cats no problem. PTF said just don't crank up the burble AGG beyond 5. If you have burbles off then no worries at all.
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11-08-2022, 12:25 AM | #4 |
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You can run it with stock cats. I have done it for three years now, no problems at all. The stock casts flows good so there is no reason tyo buy high flow cats for such a tune if you ask me. I have dynotested and compared with catless car.
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TopJimmy5458.50 FrankMstein1018.00 |
11-08-2022, 08:01 AM | #5 |
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What did you see between the two?
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11-08-2022, 08:33 AM | #6 |
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I ran stage 2 and E85 maps with the Evolution Racewerks high flow catted downpipes, no problem
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11-08-2022, 03:31 PM | #7 |
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I run stage 2 with AA GESI DP's...love it.
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TractionControlDelete4588.50 |
11-10-2022, 01:12 PM | #8 |
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Do you know if the OTS burble tune for stage 2 is above level 5? Wondering if it's safe to run OTS burbles with stock down pipes and stage 2 93 bm3.
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11-10-2022, 01:21 PM | #9 | |
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Quote:
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11-10-2022, 03:30 PM | #11 |
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Good one!
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11-12-2022, 02:38 PM | #12 |
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Lots of people including my self run Stage 2 93 octane with stock DP without any problem the stock DP flow very good save yourself some $$
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TractionControlDelete4588.50 |
11-12-2022, 02:47 PM | #13 |
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To add to that, and I'm sure others are aware but I ran some burbles on my OTS St2, and after 9 months blew out my oxygen sensors. Had to replace them.
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11-12-2022, 03:35 PM | #14 | |
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After that, I went with the catted Turner DPs and used spacers for the sensors without any issues for the year I had the setup.
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11-15-2022, 07:50 AM | #15 |
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Got the downpipes installed they were a new set of AWE's that had never been installed before, put on the stage II tune. It really sounds and feels great. Honestly I didn't notice much of a performance difference between stage I and II.
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11-16-2022, 02:12 PM | #16 |
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OK.. Black Friday deals are already up. Shall i go with CTS TURBO downpipe or catted MAD downpipe?
MAD: https://mad-us.com/mad-bmw-s55-catte...-flex-section/ CTS Turbo: https://x-ph.com/cts-turbo-3-stainle...2-competition/ Next year custom BM3 map for stage 2 is coming for my M3 so i need good DPs. I'd go for akrapovic but its way to expensive |
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11-16-2022, 06:00 PM | #17 | |
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11-17-2022, 05:16 AM | #18 |
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hahaha definitely!
Ok i read so many negative comments on CTS TURBO FB page that i guess i don't want to deal with them. Anyone has got MAD DPs and can provide feedback? Dont be afraid! |
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Info@mad-us.com1917.00 |
11-17-2022, 09:39 AM | #19 |
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We offer both brands, no negative feedback on either one
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Info@mad-us.com1917.00 |
11-17-2022, 03:10 PM | #20 |
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yeah I know, I'll be contacting you soon Mike
I checked reviews on Facebook page and there is so many negative comments on CTS quality / service that I'm very afraid of purchasing CTS Turbo products. My problem is that once I make purchase I need to make sure the product is working and fitting 100%. Returning back to USA will be a costly nightmare since im in Europe. |
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12-01-2022, 08:37 AM | #21 | |
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12-01-2022, 09:19 AM | #22 | |
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If your goal is no CEL, active autowerke with GESI cats is the way to go. CTS and MAD are great options if the CEL is not a concern and you are just looking for a better sound and more power.
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