[msdss]

Originally Posted by SpecialEdition_F87

Any update on 2021 M2 comp tunes

The thread for that is here:
https://f87.bimmerpost.com/forums/sh....php?t=1760825

And no.

[lnsaneM]

I just had installed the bm3 stage 1 91oct tune on my 2020 M2C (DCT) and wow what a difference this is. Their customer service is top notch, they helped me along every single step of the way.
From every gear the car pulls harder and just as smooth as stock. The only problem with the car is traction, which it already has traction problems in stock form.
All I have now is AA single mid plus Remus race with bootmod3 stage 1. With all the quirks bm3 offers the car drives and sounds like the it should be.
I tuned down the burble aggression with burble timing (it sounds awesome without being too obnoxious). Great way to improve the overall drivability of the car... Keep up the good work bootmod3

I haven't installed the gts transmission tune yet, due to the fact that I drive the car 95% in manual mode so I don't really care for it

[AmooManiak]

I'm considering Bootmod3 Stage 1 over Carbhan when my car gets here. I was considering Carbahn mainly due to the warranty, but as they only cover the remainder of the 2 year warranty, I don't think that upcharge is worth it - on top of being more expensive in first place. Also, bootmod3 seems to have MUCH better cusotmer service. All of their emails are responded to promptly while Carbahn takes days and sometimes does not even respond.

I'm looking to see if anyone has had bad experiences/issues with Bootmod3? I'm not new to tuning, but most other cars were either tuned locally or I went with another tuner. Is anyone aware of any catastrophic failures due to the tune?

[akkando]

Originally Posted by AmooManiak

I'm considering Bootmod3 Stage 1 over Carbhan when my car gets here. I was considering Carbahn mainly due to the warranty, but as they only cover the remainder of the 2 year warranty, I don't think that upcharge is worth it - on top of being more expensive in first place. Also, bootmod3 seems to have MUCH better cusotmer service. All of their emails are responded to promptly while Carbahn takes days and sometimes does not even respond.

I'm looking to see if anyone has had bad experiences/issues with Bootmod3? I'm not new to tuning, but most other cars were either tuned locally or I went with another tuner. Is anyone aware of any catastrophic failures due to the tune?

There are some engine failures in the n55 section. Unclear if the tune caused the issue.

[AmooManiak]

Originally Posted by akkando

There are some engine failures in the n55 section. Unclear if the tune caused the issue.

Understood. I'm mainly concerned with the S55. Also, I assume that powertrain warranty is void with bootmod3 and it can be traced easily?

[AlpsRider]

Originally Posted by AmooManiak

Understood. I'm mainly concerned with the S55. Also, I assume that powertrain warranty is void with bootmod3 and it can be traced easily?

If you have a tuned car then BMW can find traces of it if they look hard enough. It doesn't matter which tune. Some people think a piggy back tune is safe but the turbo boost will be higher than what is normal and they can find that info.

If you tune then be prepared to loose engine warranty if it blows up.

[AmooManiak]

Originally Posted by AlpsRider

If you have a tuned car then BMW can find traces of it if they look hard enough. It doesn't matter which tune. Some people think a piggy back tune is safe but the turbo boost will be higher than what is normal and they can find that info.

If you tune then be prepared to loose engine warranty if it blows up.

Got it. I assumed so, but was just wondering if bootmod3 is any more visible than the other tunes, or are they all the same. I assume the same since they can trace boost pressure increases and even flash counters.

[AlpsRider]

Originally Posted by AmooManiak

Got it. I assumed so, but was just wondering if bootmod3 is any more visible than the other tunes, or are they all the same. I assume the same since they can trace boost pressure increases and even flash counters.

If you have a M2C from before 3/19 then it's most likely OBD port unlockable. In that case you could flash back to the stock tune and relock it before going in for service.

[M2_MEDUSA]

Originally Posted by AlpsRider

If you have a M2C from before 3/19 then it's most likely OBD port unlockable. In that case you could flash back to the stock tune and relock it before going in for service.

That doesn’t work. Just because you relock it honestly doesn’t mean anything bmw has access to the information of how many times your car has been flashed. Everytime you flash your car the flash counter goes up by +1. Bmw will flash your car everytime they do an update. They record keep how many times your car has been flashed and if your flash counter is off your straight fucked. If you want the safest bet of warranty. Run a piggyback. But even that isn’t totally 100% fool proof for bmw but it’s much better

[AlpsRider]

I was under the impression that BM3 and most other flash tunes have a way of resetting the flash counter, at least thats what I've read in tuning threads. Of course there are other ways for them to catch a tune like overboost which is mainly what a piggyback tune does.

[doughboy]

Originally Posted by SpecialEdition_F87

That doesn’t work. Just because you relock it honestly doesn’t mean anything bmw has access to the information of how many times your car has been flashed. Everytime you flash your car the flash counter goes up by +1. Bmw will flash your car everytime they do an update. They record keep how many times your car has been flashed and if your flash counter is off your straight fucked. If you want the safest bet of warranty. Run a piggyback. But even that isn’t totally 100% fool proof for bmw but it’s much better

They can't ses flash counters etc with regular workshop ista terminal.

Yes if you have a major engine warranty claim then they'll look further for sure.

Regarding flash counters, its perfectly ok for car workshops outside the BMW network to carry out flash /programming updates on cars (it is in EU/UK anyway) so BMW would have no knowledge of this so can't rely on that figure.

My cars never been to BMW only to an independent BMW specialist. They always all if i want the updates doing to which they get a resounding NO!

[msdss]

Originally Posted by doughboy

They can't ses flash counters etc with regular workshop ista terminal.

Yes if you have a major engine warranty claim then they'll look further for sure.

Regarding flash counters, its perfectly ok for car workshops outside the BMW network to carry out flash /programming updates on cars (it is in EU/UK anyway) so BMW would have no knowledge of this so can't rely on that figure.

My cars never been to BMW only to an independent BMW specialist. They always all if i want the updates doing to which they get a resounding NO!

Dealerships can be real cunts. Most of them will go from fake-friend to foe real fucking quick when money comes into the equation.

Will they check? Maybe. Maybe they'll be dicks about it. Maybe they won't. If they want to deny your claim, or void your warranty just because you have some new ass hole who wants to look good for his bosses, then you're kind of fucked unless you get a lawyer.

[doughboy]

Originally Posted by msdss

Dealerships can be real cunts. Most of them will go from fake-friend to foe real fucking quick when money comes into the equation.

Will they check? Maybe. Maybe they'll be dicks about it. Maybe they won't. If they want to deny your claim, or void your warranty just because you have some new ass hole who wants to look good for his bosses, then you're kind of fucked unless you get a lawyer.

I agree, but remember dealerships make probably 50%+ of their workshop revenue getting paid for warranty work by BMW. It's in their interest to do the work as they get paid time for it, it keeps the technicians busy and is profitable for the franchise.

They WANT to do the work, they will do what they can to do as much as they can get paid for, they know how to play the system.

So unless the test process throws you out they won't be looking for reasons not to do warranty work, that's just bad business for them.

[MR RIZK]

Originally Posted by doughboy

I agree, but remember dealerships make probably 50%+ of their workshop revenue getting paid for warranty work by BMW. It's in their interest to do the work as they get paid time for it, it keeps the technicians busy and is profitable for the franchise.

They WANT to do the work, they will do what they can to do as much as they can get paid for, they know how to play the system.

So unless the test process throws you out they won't be looking for reasons not to do warranty work, that's just bad business for them.

They only want to do easy work. The run rate stuff that requires one and a half brain cells

[msdss]

Originally Posted by MR RIZK

They only want to do easy work. The run rate stuff that requires one and a half brain cells

truth. brake jobs and oil changes are the money shot. things that take up a bay for several days, not so much.

[lnsaneM]

I’m curious as what are the dyno results for stage 1 and 2 on both 91 and 93 octanes

[BMW DIY Guy]

Two questions..

1. Moving to OTS stage 2 this week: in the N55 changing plugs plus more aggressive gap was very typical. Any similar changes for the S55 motor?

2. Has anyone mapped out what the OEM burbles are in the custom burbles map? Like oem equals this setting in each option?

Just wondering..

Thanks yall!

[DAXXR]

Originally Posted by AlpsRider

If you have a tuned car then BMW can find traces of it if they look hard enough. It doesn't matter which tune. Some people think a piggy back tune is safe but the turbo boost will be higher than what is normal and they can find that info.

If you tune then be prepared to loose engine warranty if it blows up.

the engine ecu is automatically checked every service visit to the dealer

If it's been tuned BMW will void your entire drivetrain warranty

The best I got was they will decide 'case by case' if the previous owners tune caused a potential warranty issue

[doughboy]

They don't check ECU parameters every service. ISTA workshop tool can't check that that kind of thing, sure if you have a big warranry claim they may dig a little - as required by the warranty provider.

I don't know why the fuss - you got to pay to play.

Either you wait till warranty is over, then tune, if it blows you have to pay BUT you've had to wait 3 years to enjoy it.

Or you tune in warranty and if it blows you have to pay.

Either way you pay, just sooner or later that's all. And as with any mechanical thing it's more likely to fail when it's older. (other than very early failures).

[AlpsRider]

Originally Posted by DAXXR

the engine ecu is automatically checked every service visit to the dealer

If it's been tuned BMW will void your entire drivetrain warranty

The best I got was they will decide 'case by case' if the previous owners tune caused a potential warranty issue

I personally know many people with Flash Tuned BMWs that are still under warranty. None of the cars have been flagged because of the tune during a service visit.

[lnsaneM]

For those of you who have the cold start delete (with or without the gts roar @ start up). Is it better for the car in colder climates during winter time to turn cold start back on? Or is it okay to leave it off and let the idle for about a minute before driving?

[TrentMeister]

Originally Posted by lnsaneM

For those of you who have the cold start delete (with or without the gts roar @ start up). Is it better for the car in colder climates during winter time to turn cold start back on? Or is it okay to leave it off and let the idle for about a minute before driving?

No the cold start gets your cats to operational temp faster.

You don't generally want to idle a direct injection car more than 30 seconds.