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M2 Technical Topics > S55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Tunes?

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      01-10-2021, 10:14 AM   #23
pz619
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Okay if I can't tune it what can I do to increase the HP?
You can’t flash tune but you can still tune via piggyback, such as bms stage 1 or their jb4 box.
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      01-10-2021, 10:21 AM   #24
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Is it possible someone invests in developing a "piggyback" box that does more.... like a full in-line ECU or subsystem.... that type of thing might be applicable to several different platforms making it worthwhile. I dunno.
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      01-10-2021, 08:35 PM   #25
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Originally Posted by 21M2 View Post
Hi all I just took delivery of my 2021 M2C and considering a tune. Is there a tune out there that won't mess with my warranty? I'm happy with the exhaust as is and really don't wanna mess with heat exchangers or other mods so what is the safe tune on a stock M2C? Thanks!
I have a 2020 HS manual and I also wanted to get a little power bump without the warranty concern so I opted for the Dinan performance flash ( approx. 60 hp and 50 + ft lb trq.) which is noticeable and you feel it across the entire rev range so closer to the m4 / m3 CS which has the extra trq over the M2 CS. i went to a Dinan certified shop who took out the module and sent to Dinan to be unlocked and l back to do the flash ( so 3 days in total to take out send overnight and get it back etc )..
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      04-15-2023, 08:23 PM   #26
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I’ve got a question. I just installed the VRSF catless downpipe, and put sensor spacers for the check engine but I ended up tuning it to MHD stage 2. I’m curious if they’re okay to be left on with the tune clearing the CEL or if I need to take them. I do have a check engine currently from “slow response from o2 spacer” so I’m thinking I need to take them off to clear that CEL currently. Any advice helps.
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      04-24-2023, 11:16 AM   #27
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I’ve got a question. I just installed the VRSF catless downpipe, and put sensor spacers for the check engine but I ended up tuning it to MHD stage 2. I’m curious if they’re okay to be left on with the tune clearing the CEL or if I need to take them. I do have a check engine currently from “slow response from o2 spacer” so I’m thinking I need to take them off to clear that CEL currently. Any advice helps.
I would remove it
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      04-24-2023, 11:39 AM   #28
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Yep it was the spacer. I removed and it runs amazing
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      04-25-2023, 10:26 AM   #29
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Yep it was the spacer. I removed and it runs amazing
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      04-25-2023, 03:00 PM   #30
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Okay if I can't tune it what can I do to increase the HP?
Jenny Craig.
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      04-26-2023, 09:59 AM   #31
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Jenny Craig.
It took two years for you to come up with this response, but it made me laugh, so I'm going to accept it!
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      04-26-2023, 12:15 PM   #32
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It took two years for you to come up with this response, but it made me laugh, so I'm going to accept it!
Bless you...
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