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03-10-2026LAST POST
SAMI1820 wroteCan CarBahn now unlock your ECU(post 6/2020) for a flash tune or is this question in regard to a Piggy Back device?Have anyone got CarBahn stage 1 tuning done to their 2023 X5 M50I. If you have would you please describe about your likes and what you don’t like about it. Also is it worth it to have it done thanks in advance.
cobramite wroteNo my question was for if anyone have it installed either by dealer or by carBahn.Can CarBahn now unlock your ECU(post 6/2020) for a flash tune or is this question in regard to a Piggy Back device?
I just finally got it installed by BMW dealer and it will not void warranty either. will post my review about this tune once I have tried out. But so far drive from a dealership to home it feels much better then before there’s no lag in acceleration that was there before and it sounds more aggressive now in comfort mode. So will post the review once I am done testing it out.
SAMI1820 wroteWhat did the dealer tell you about warranty? BMW isn't going to cover any major powertraun claims. Is the dealer saying they will? That would be crazy.No my question was for if anyone have it installed either by dealer or by carBahn.
I just finally got it installed by BMW dealer and it will not void warranty either. will post my review about this tune once I have tried out. But so far drive from a dealership to home it feels much better then before there’s no lag in acceleration that was there before and it sounds more aggressive now in comfort mode. So will post the review once I am done testing it out.
slicky wroteSo this is an ECM flash? If it is you are 100% correct, BMW will not honor the powertrain aspect of the warranty.What did the dealer tell you about warranty? BMW isn't going to cover any major powertraun claims. Is the dealer saying they will? That would be crazy.
slicky wroteYes it is fully warranty and the product was sold and installation done by the same dealership who I brought the car from BMW Houston North.What did the dealer tell you about warranty? BMW isn't going to cover any major powertraun claims. Is the dealer saying they will? That would be crazy.
SAMI1820 wroteYour BMW powertrain warranty will NOT cover repairs if it is known that a tuning device has been or was installed. You must have Carbahn's "warranty" included in the price you paid.Yes it is fully warranty and the product was sold and installation done by the same dealership who I brought the car from BMW Houston North.
Quite honestly it does not appear that you fully understand what you have purchased or have been mislead by the dealer.
Hope your device serves you well. Give us a full review of the product soon if you can.
cobramite wroteYes sir you are correct it is carBahn warranty that match new car warranty. Yes sir I will give my full review once I have fully tested this product.Your BMW powertrain warranty will NOT cover repairs if it is known that a tuning device has been or was installed. You must have Carbahn's "warranty" included in the price you paid.
Quite honestly it does not appear that you fully understand what you have purchased or have been mislead by the dealer.
Hope your device serves you well. Give us a full review of the product soon if you can.
SAMI1820 wroteI've installed it in my X5 M50i, the difference is not that huge .Have anyone got CarBahn stage 1 tuning done to their 2023 X5 M50I. If you have would you please describe about your likes and what you don’t like about it. Also is it worth it to have it done thanks in advance.
SAMI1820 wroteHow's your experience with carbahn? I've got it installed by carbahn but i installed catless DP same day so i don't really know how much the power increased by tuner and how much through DP lolNo my question was for if anyone have it installed either by dealer or by carBahn.
I just finally got it installed by BMW dealer and it will not void warranty either. will post my review about this tune once I have tried out. But so far drive from a dealership to home it feels much better then before there’s no lag in acceleration that was there before and it sounds more aggressive now in comfort mode. So will post the review once I am done testing it out.
cobramite wroteDME flash gives the huge bump, stage 2 tune gives over 700 bhp and 650 torque on M50i.Full flash ECM tune or Piggyback? An ECM flash should be a big bump in power and torque.
This is a gamechanger but all generations are not yet supported. Hoping the S68 is unlocked soon.
https://g20.bimmerpost.com/forums/showthread.php?t=2038454
cobramite wroteCarbahn also started DME flash tune for 2022 X5M50i so i called them and they quoted me $250 for installing the tune + $1975 for femto DME unlock because i have there stage 1 controller installed in my car. I'm thinking about getting it tune from carbahn.Mission Performance now has an at home ECM unlock for a full flash tune.
This is a gamechanger but all generations are not yet supported. Hoping the S68 is unlocked soon.
https://g20.bimmerpost.com/forums/showthread.php?t=2038454
I also flash tuned the transmission with xhp stage 3 yesterday
postbox1918 wroteYour vehicle is going to be an absolute monster with a full flash tune, likely in the 700HP range.Carbahn also started DME flash tune for 2022 X5M50i so i called them and they quoted me $250 for installing the tune + $1975 for femto DME unlock because i have there stage 1 controller installed in my car. I'm thinking about getting it tune from carbahn.
I also flash tuned the transmission with xhp stage 3 yesterday
Go for it and enjoy!
cobramite wroteThanks,Your vehicle is going to be an absolute monster with a full flash tune, likely in the 700HP range.
Go for it and enjoy!
That's the graph for M50i
postbox1918 wroteHow did the tune go? I'm not sure if you told them about the xhp but their software isn't prepped to cope with xhp. They suggest tq limits revert back to oem (750nm) per gear.Carbahn also started DME flash tune for 2022 X5M50i so i called them and they quoted me $250 for installing the tune + $1975 for femto DME unlock because i have there stage 1 controller installed in my car. I'm thinking about getting it tune from carbahn.
I also flash tuned the transmission with xhp stage 3 yesterday
Did you dyno or do any drag runs you can share?
Dasky_spas wroteOh wow , thanks for letting me know that because today I'm going carbahn to drop my DME's for tuning and I'll ask them about the xhp.How did the tune go? I'm not sure if you told them about the xhp but their software isn't prepped to cope with xhp. They suggest tq limits revert back to oem (750nm) per gear.
Did you dyno or do any drag runs you can share?
Dasky_spas wroteI called carbahn and spoke to there tuner and he confirmed that xhp tune is not supported with there tuneHow did the tune go? I'm not sure if you told them about the xhp but their software isn't prepped to cope with xhp. They suggest tq limits revert back to oem (750nm) per gear.
Did you dyno or do any drag runs you can share?
I think because they provide factory warranty option to purchase with tune so that's why they don't want people to push there cars to full limit and cause issue with engine and transmission.
Now I'm completely confused 😕 to decide if i should go with carbahn or not.
