Getting ready to flash my vehicle. Question, did you leave your door open while doing the flash? Thanks.
Quote:
Originally Posted by dbchun
cross posting this from e90post as I personally couldn't find a lot of info about MHD on this forum and had to venture elsewhere to learn about it
hopefully this helps anyone considering the app.
finally had a chance to install the MHD tuning flash today 
installed stage 1 map. very happy with the results. car feels much stronger, especially in the higher rpm ranges. pulls much harder and is noticeably quicker.
total investment = $154.83  (returned the battery charger)
current specs:
- 2009 135i N54
- ~80,000 miles
- completely stock, not even a walnut blasting yet
installation tools:
installation is very straight forward. made sure to use a battery charger as the entire process takes ~40 minutes and have read drops in voltages can cause errors.
no convenient electrical outlet at my apartment complex so had to run a long extension cable
#apartmentproblems 
battery charger
cables
OBD-II cable lights up
MHD app automatically opens
Back up stock ECU map
Purchased flasher module and stage 1 map (this includes stage 1 and stage 1+)
Selected Stage 1 map to do "full write" - switch phone to airplane mode
Flashing process - at first the car chimes and a few different symbols pop up on the dash but goes away
Flash write completed - process took 39 minutes
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