04-16-2020, 09:25 PM | #1 |
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14 M6 downpipes without tune question
BMW M6 S63tu I want to install downpipes with o2 adapters to eliminate check engine, doing mostly for louder pops(cracks) from competition exhaust don't care about power, but I do not want to get a tune. Can I run Catless downpipes without tune safe? It won't mess with my AFR? I just don't want to run lean or rich after installing downpipes.
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04-16-2020, 10:51 PM | #2 |
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Regardless of running lean or rich our cars already mostly run rich. Yes you can run down pipes with out a tune you will just run rich and smell some gas at times. Computer might still throw light on. But if you are not due for a state inspection and then get a tune 3 months down the road
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04-16-2020, 11:57 PM | #3 | |
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04-16-2020, 11:58 PM | #4 |
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If you get good o2 adapters there shouldn't be any problems with check engine lights or anything.
If I were you I'd still get a tune to get more backfire and bring the car alive, but it's up to you! Have fun with it |
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04-17-2020, 07:22 AM | #5 | ||
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04-18-2020, 02:27 AM | #6 | |
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If you have the CP you will only suffer from CEL, If you have the regular M6 RPM might drop while driving in 6th Gear at low speed causing the car to stall. Best suggestion is to get BM3, flash your OEM tune back and just switch off the O2 (in case you don't have the CP, choose the CP tune (still OEM) from BM3 (575hp) and switch off the O2. |
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04-24-2020, 02:31 PM | #7 |
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I drove about 300miles with DPs and without a tune. Obviously with CEL on, waiting to decide which tune to go for (ended up going with bm3 2 months ago)
No problem with the car during trip with the CEL light on, you will instantly feel quicker response in the high rpm range but a smidge of power loss from 2k to 3k rpm. Also M6Roar where did you find this info? Never ever heard about that (and mine didn't do that before tune for 300miles - regular M6 2014) |
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04-25-2020, 02:16 PM | #8 | |
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Last edited by M6Roar; 04-26-2020 at 01:31 AM.. |
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05-25-2020, 11:19 PM | #9 | |
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05-26-2020, 08:42 AM | #10 |
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Without a tune it will def be slower as parameter need to be changed in your ECU to take in account for air/fuel mixture etc. RPMs will dip some. Not really sure it would be worth it to me unless I was tuning also.
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05-27-2020, 02:49 AM | #11 |
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Hey guys I’m kinda in a similar situation and need some advice. I’m installing catless dp on my M6. I’ve decided to get a Jb4 with the Bluetooth kit ( the $800 version). Now, if I run catless dp and map 1 will I need to upgrade the spark plugs 1 step colder and gapped or can I use this setup with stock plugs without issues? I’m not interested in racing nor do I drive hard. It’s mostly for more sound with the E-sport and the JB4 to remove CEL. I don’t think I’m interested in an ECU tune either. The piggyback back is all I need.
Let me know your thoughts. Thanks |
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06-01-2020, 12:27 AM | #12 | |
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https://www.6post.com/forums/showthread.php?t=1689101 Right now I am at stage 2 93 oct, didn't get the time to dyno it (extremely hot climate) but it feels far more powerful that stage 1, I would say Avg. 640 +- 3% BM3 support is one of a kind and it has a larger community. |
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06-01-2020, 02:56 PM | #13 |
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06-01-2020, 11:36 PM | #14 | |
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If not I think going with a stage 1 tune will yield more benefits than an adaptor (technically doesn't stop the CEL) & downpipes. If you are looking for burble then a tune can do that & If you are looking for louder exhaust just go with Muffler delete. If you are looking to adj. parameters, go with JB4 or BM3. Just logically speaking, a good quality downpipes will cost you over the price of a JB4 or a BM3 not to mention installation (if you know someone that can fix it for free. ), gaskets , etc. If its about a warranty then keep it stock until it finishes. Damn thats alot of IF conditions lol. |
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