Excellent tuning app and outstanding customer support
I contacted MHD with a few technical questions about Stage 2 and Stage 2+ on my S55 engine. Their team responded quickly, clearly, and honestly. They didn’t try to sell me unnecessary upgrades—instead, they explained exactly what made sense for my setup and fuel quality.
It’s rare to find this level of transparency and technical knowledge. The app works great, the tuning is reliable, and the support is first-class.
Highly recommended!
It’s rare to find this level of transparency and technical knowledge. The app works great, the tuning is reliable, and the support is first-class.
Highly recommended!
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For b58 better off getting mg flasher
Comparing the mhd b58 stage 2.5map 95oct with the mg flasher b58 stage 2.5map 95oct, the mg flasher has better throttle response , faster turbo spool , cleaner logs with no timing corrections.
S63
Make more options for s63 motors
love the app
just wished it worked with the n52 i love my n54 and the app works great but also have n52 that i would love to read data and everything and even tune but cant bc its not supported i just want one app for everything if they can add that i would be happy
Update Issues
The recent update has created two error codes for CAN 1 and CAN 2 sensor timeout. The Ethanol sensor value is at 0%. Following a reflash the car generated a Power Management Fault and Incorrect Shutdown Error. The Ethanol sensor value went to 0 again. No issues with car or software since last release. Why do updates get pushed automatically? I’d rather update after everyone exposes bugs and they are resolved. Clearly MHD tests code in production.
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Don’t download 5.22
5.22 version is broken. Can’t log.
Great platform
Using it for mk5 Supra and it’s great
User friendly
User friendly super fast
App is broken
I cent open the app on my 17 pro max running ios26.2. I can’t use the n54 app because it only direct me to the new broken app.
The app keeps crashing
Can you please fix the app crash on the iOS device?
The Newest Update
Once I installed the update I am unable to open the app. Before the update the app was amazing. Now after the update I’m unable to open the app.
Add 94 as a gas option
Where I live 94 is the top
MHD FTW
Love MHD. Wouldn’t have my car tuned on any other platform
The best bmw tuner
I’ve bought MHD for now my fifth car. Never disappoints always gets better recommend to everyone with BMWs
Transfers
YSK: you are unable to change the login name/email. So when you sell the car, the new user is stuck with the user name you chose.
I give 5 stars but….
They deserted us n54 guys 👎
Lied about being able return my flasher license
First and last time buying anything off mhd. I bought flasher license because I thought I could data log on there but apparently not. I emailed them asking if I could get a refund if I get the super license and they said excuse “buy super license, activate on same account and car, and we will refund the flasher license afterwards” after I bought the super license then they said just because I didn’t get it from the website they said they can’t refund. And I was confused on why they couldn’t because that other website still pays mhd to get the license and I still activated it on the same account like they said.
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Very easy to use, lots of functions, and great customer support!
My experience with MHD has been great. I had questions before I bought my license and also questions that had to do with my logs. I assumed with such a large amount of followers on Instagram, MHD would not reply, but within hours they answered my questions and helped me. The features and constant updates are great. Also, the ability to run logs and look at many parameters is a game changer! Would recommend!
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Went back to Bootmod3
MHD was not user friendly, my car was slower and after I switched to BM3 the car was actually smoother and now I can beat my other b58 friends who have started to ask how and are switching too
The Temu of tuning apps
Clunky app, constant bugs , No support for 2 of my cars, don’t hold your breath waiting for tech support, they never respond. Don’t waste your money
