[mutunekk]

First things first – bootmod is amazing. if you have an unlocked DME it is 100% worth it.

Now I am having a major issue uninstalling it from my car. I recently flashed to the multimap tunes (amazing tech) but now need to take my car in for some basic work and 100% BMW will screw my warranty if I show up with bootmod installed.

For some reason bootmod will only allow me to install other multimap tunes and will not let me go back to stock and “lock the DME”. it starts the flash then goes into clearing codes... no errors or anything is displayed in the console.

Even the stage 1 or stage 2 without multimaps fails but the multimap versions install 100% fine on the car and everything works like it should.

Contacted the bootmod team (who were super helpful – working on weekend etc.) who then tried to flash the car using e-sys to the original settings. But they were unsuccessful (they were getting the "missing SWEs in PSdZdata directory" error) and randomly told me that they had locked my ECU and I needed to get it bench unlocked…

This turned out to be wrong as the car still flashes bootmod tunes fine just as long as they are multimaps… at the same place i started.

So now I’m stuck with either going to get my car bench unlocked (will void my warranty) or going hoping BMW doesn’t notice (100% void my warranty) which really sucks.

Its there anyone who can help with the flashing my car back to its stock ECU without the unlock? or am i screwed and need to figure out how to bench unlock my car?

Just on a side note: there is a high chance that others with the M2 comp will have the same issue. I would stay away from the multimap tunes… the rest are awesome.

[tropicatango]

I suggest another oem stock ecu from a salvage car and have someone match it to your car, for some some people it's easy to do

Just find the good one

This way, you'll keep your warranty
While it's installed, have yours bench unlocked

[MTWO]

Not sure I get your issue as mine is an M2C as well and zero issues. You can flash your previous stage 1 or 2 maps. This is what I did for my old maps. You just click on it and click that Convert to custom rom button. It’ll make a copy of that map which you can now flash and you get antilag built into it too.

[beezyM2C]

i had/have this same exact issue right now

[chmura]

Why worry? You pretty much lost your warranty when you flashed your car. The dealer can detect your tune even if you flash back to stock. The new version of ISTA can detect if you were tuned during a regular oil change reset automatically.

I would just take it in flashed.

[Megator]

Originally Posted by chmura

Why worry? You pretty much lost your warranty when you flashed your car. The dealer can detect your tune even if you flash back to stock. The new version of ISTA can detect if you were tuned during a regular oil change reset automatically.

I would just take it in flashed.

This is the correct answer. Also the ECU records stuff like over boost or higher TQ demands than stock and flags the ECU as tuned even if you put a stock map back on.

Only way to cheat the system is a different stock ECU matched to your current car.

[stefan]

Originally Posted by chmura

Why worry? You pretty much lost your warranty when you flashed your car. The dealer can detect your tune even if you flash back to stock. The new version of ISTA can detect if you were tuned during a regular oil change reset automatically.

I would just take it in flashed.

for real. Honesty is probably better policy and op might benefit from building a relationship with his local dealer i.e., when something fails that isn't motor or drivetrain related, his claim will be easier to make. But if the motor or drivetrain fails there should be no expectation of warranty.

[beezyM2C]

Originally Posted by chmura

Why worry? You pretty much lost your warranty when you flashed your car. The dealer can detect your tune even if you flash back to stock. The new version of ISTA can detect if you were tuned during a regular oil change reset automatically.

I would just take it in flashed.

Yeah i kinda explained this to him in a PM

I have only set foot inside of a BMW service area twice, once for RIS and a second time getting my front lip put on because i hadnt found my second home, i mean shop yet