10-26-2020, 04:36 PM | #1 |
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MHD questions
My 2016 340I RWD had MHD stage 2 with DP installed when I bought it 3 months ago.( The previous owner only had the car for 3 months when he installed the mods but had to sell due to serious medical condition.)
I wanted to drive the car for awhile before I made any changes to tune so we left it on, with the plan for me to buy License to be able to make adjustments in the future. The car is a blast to drive and the power is beyond any other BMW ive owned. I also want to add XHP trans tunes soon to get the most out of the setup. As I would like to have the stock tune as backup, do I need to have the previous owner restore the stock tune via his MHD license before I flash with my own? Or are the original bin files stored in onboard memory? Ive studied the MHD manual and searched for info relating to this but so far haven't found anything addressing this specific scenario. I just got the MHD WiFi dongle today and was able to use the app without logging in to see what was loaded, and there appears to be 2 sets of files that I am assuming (hoping) to be the tune and backup for stock. The previous owner is willing to flash back to stock if that is required, but would save a 2 hour round trip if I it isn't necessary. I emailed MHD this question 3 weeks ago but haven't heard back. Which begs the next question, Should I be looking at BM3 or MG flasher as an alternative? Although im digging the tune, the restrictions on licensing seem a tad over the top. Are BM3 and or MG Flasher as well integrated with xhp? (Also I think they both use different OBDII adapters so there is that, but could be wrong.) |
10-26-2020, 05:06 PM | #2 |
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So I may have found the answer to my own question.(I swear I searched endlessly prior to posting ) In this N54 tech forum the question of restoring to stock is addressed (by MHD). But im still a little hazy on how that works and Im balking at plunking down 540$ to go forward with MHD.
https://www.n54tech.com/forums/showthread.php?t=31802 |
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10-26-2020, 07:15 PM | #3 | |
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BM3 has a documented process for this, but requires assistance from their great customer support.
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2022 CT4-V Blackwing 6-speed
SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
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10-27-2020, 04:37 AM | #4 |
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Just curious - how many kms/miles does the car have now and when you say "The previous owner only had the car for 3 months when he installed the mods but had to sell due to serious medical condition.)" - does that mean that MHD was installed when the car was 3 months old (back in 2016)?
I am just curious about the durability and live-expectancy of the engine with all those tunes around, especially Stage 2....
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10-27-2020, 02:26 PM | #5 | |
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10-27-2020, 02:56 PM | #6 | |
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I agree there is a risk, but I am fairly conservative, do proper warm up and rarely rev it out past 5k. Already changed the oil and will do every 4K . I also don’t do launch control take offs.( I am a little more worried about breaking the trans than the engine) Some folks out there are really pushing the turbo boost with Ethanol fueling and meth injection. ( I am fueling with 93octaine ) I can’t be pushing much past 400whp, probably a bit less. Time will tell. |
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10-27-2020, 05:27 PM | #7 |
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You might need to get the original owner to request/start that process. He'll need to be involved either way since he currently owns the license.
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2022 CT4-V Blackwing 6-speed
SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
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10-27-2020, 07:10 PM | #9 | |
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10-28-2020, 02:16 AM | #10 | ||
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"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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10-28-2020, 10:33 AM | #11 | |
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Stage 2 is nothing, stop trying to scare the dude.
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10-28-2020, 10:45 AM | #12 | ||
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Besides that - I simply asked a question. Your answer and personal experience is noted and appreciated.
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Last edited by Skyhigh; 10-28-2020 at 10:50 AM.. |
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10-29-2020, 08:14 AM | #13 | |
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My intention is to only use the extra hp/tq/boost to pass Mustangs and Chargers on the highway :-) , or to just to know it’s there if needed :-). But if you are tracking 2 days a week and hitting the drag strip regularly, or logging 0-60 Dragy runs on the way to pick up the eggs you volunteered to get for the cake your wife is baking (actual scenario), maybe your mileage may vary?. But then again, you could have done all those things on stock tune, with oil you haven’t changed in 18K miles and suffer catastrophic failure anyway (actual scenario). You pay to play one way or another, either in extra care and maintenance or replacing parts you’ve thrashed |
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10-29-2020, 08:46 AM | #14 |
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licenses are account and VIN bound .
so no transfer for you . You will have to buy the full package , lock your vin the new license, flash to stock or anything else and be done with it end of story
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10-29-2020, 09:13 AM | #16 | |
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Apart from that - your logic is true - the more you play, the more you pay, irrespective of the map. This said - the more "stressful" the map, the less safety margins (if any at all), irrespective of how you play. So you can look at it both ways. No one in his right mind would claim however that engine/transmission/etc. wear and failure rate is not increased by an aftermarket tune. As long as we all agree with the above, there is neither an intent to scare, nor to comfort anyone. Just a recommendation to make educated decisions. I was just curious about your car's history.
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10-29-2020, 01:15 PM | #17 |
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Yes I understood that, and am ok with purchasing new license. The original question was about returning car to base/stock tune before I flashed with my own MHD license, was it necessary to have the original MHD that is locked to the vin to do that. I now understand that the stock tune, with adaptions, can be re-flashed with my (soon the be acquired ) MHD license independent of previous flash.
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10-29-2020, 01:40 PM | #18 | |
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Yep, went into buying this car with eyes wide open. As for MHD stage 2 tunes timing, fuel trims and boost being significantly different than stock under moderate throttle I’d be surprised. Would be interesting to compare logs. But that seems like whole different discussion. |
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10-29-2020, 02:09 PM | #19 |
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Drives: 2015 335i xdrive Msport Mbrake
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You can register MHD with any gmail etc... just make sure you use a burner account when registering... transfer the account to the next person but it is locked to that VIN#... the account can be used on any android device... I actually have it on 2 separate phones for my car.. depending which one I have at the time... this no selling thing is BS...
Last edited by FastF30; 10-29-2020 at 02:25 PM.. |
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10-29-2020, 04:28 PM | #20 | |
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Yup, confirmed. Can I transfer my license? Licenses are personal and stored by google along the account used at purchase time. The purchases are tied by google to the first account and can not be transferred to a new google account.
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2022 CT4-V Blackwing 6-speed
SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 Last edited by G.Newt; 10-29-2020 at 04:43 PM.. |
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10-29-2020, 05:44 PM | #21 | |
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10-29-2020, 05:55 PM | #22 | |
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