[NBE23M2]

Please delete

[VisualEcho]

Just wow.

1. Buy a low-mileage used engine
2. Sell car
3. Start over with a fresh car

[ewant81]

Sorry to hear about your engine! If you do replace the engine and start tuning again, I would strongly recommend getting a custom map with the car on some rollers. Failing that, get a wideband O2 sensor fitted with an AFR gauge so you can see when it's running lean.

It does sound like the Dinan flash map has made the engine run lean leading to excessive det.

[akkando]

Originally Posted by ewant81

Sorry to hear about your engine! If you do replace the engine and start tuning again, I would strongly recommend getting a custom map with the car on some rollers. Failing that, get a wideband O2 sensor fitted with an AFR gauge so you can see when it's running lean.

It does sound like the Dinan flash map has made the engine run lean leading to excessive det.

Couldn't he just use bootmod to log or do a live reading of the sensors to find out if everything is as it should be?

[DriverDaily]

Originally Posted by ewant81

Sorry to hear about your engine! If you do replace the engine and start tuning again, I would strongly recommend getting a custom map with the car on some rollers. Failing that, get a wideband O2 sensor fitted with an AFR gauge so you can see when it's running lean.

It does sound like the Dinan flash map has made the engine run lean leading to excessive det.

This was a piggyback, not the flash, right? Do you have a source for the flash running lean?

[Artemis]

Originally Posted by NBE23M2

BMW reached out to me a week later with their findings: cylinder 1 had very low compression and due to the “Dinan tune” they weren’t going to cover it under warranty. They said they contacted Dinan for coverage but they weren’t going to cover it either since I “hadn’t purchased their entire package.” They said the car “needed a motor”. An M2 short block from BMW is $22,000 and the labor is $3,800. So all in about $26,000 plus tax. I asked what happened to the engine and they didn’t know anything except cylinder 1 failed a compression test and that there was metal present in the oil and the oil filter.
So what now?

Try to find an inventive solution for the problem.

Did Dinan inform you that the car "needed a motor" at the time of your order ?

[Happy Motoring]

Dinan probably would have just rejected your claim cus of BM3 anyway but to deny based on you just having the tuner and not the whole package doesn't make sense. Are they saying you need the S2 package to have warranty? I wonder if everyone knows this cus this is news to me.

[Anthony1s]

Can white smoke (burning oil) come out of an exhaust with a catalytic converter?

[Poochie]

Originally Posted by Happy Motoring

Dinan probably would have just rejected your claim cus of BM3 anyway but to deny based on you just having the tuner and not the whole package doesn't make sense. Are they saying you need the S2 package to have warranty? I wonder if everyone knows this cus this is news to me.

It sounds like he had the $299 Dinan boost controller, not the Elite "Dinantronics" piggyback, with the supplementary warranty.

Regardless, he claimed he had removed the Dinan Sport, awhile back and went BM3 flash tuning, so Dinan's involvement is in this situation is completely irrelevant.

By design, the second you flash tune these vehicles through the OBD2 port, the ECU's 'checksum' triggers an incremental flash counter, with a sequenced date and time stamp attached, which is a dead giveway to anyone checking, how and when software was changed.

Thus, specifically the engine section of his warranty coverage would of been null & voided, either way. Case close, end of discussion.

Also, I bet you anything that he volunteered more information than what was necessary, to the dealer. So, he kind of sunk himself but I guess that's "right" thing to do.. Or so I've heard

It sounds like a used motor is in your future OP, good luck.

[Hankdoll]

That's awful, sorry to hear. Might as well expand your used motor search to include the S55. At least you'd be upgrading.

[VisualEcho]

Originally Posted by Hankdoll

That's awful, sorry to hear. Might as well expand your used motor search to include the S55. At least you'd be upgrading.

Um, huge can of worms. Not as easy as it sounds.

-Used N55
-Sell car
-Get different car.

[Hankdoll]

Originally Posted by VisualEcho

Um, huge can of worms. Not as easy as it sounds.

-Used N55
-Sell car
-Get different car.

Perhaps, but we know it fits!

[F87source]

OP a few things I want to add:

1) Did you data log your car after flashing the ots map for the first time and after the first misfire was addressed, if so can you post it?

This is an essential part to ensuring your car or local fuel quality can handle the map without issue.


2) Why didn't you half the maintenance interval? BMW is notorious for having extremely long maintenance intervals which contributes to premature failure after warranty. This shouldn't have been an issue for such a low mileage car though, just some advice I suppose.


3) What were the exact misfire codes and were the from bm3, ista, or a generic obd2 tool? Also did any of the spark plug electrode fall off into the cylinder?


4) It is kind of weird that the engine failed from a misfire, generally at such low power levels misfires tend to be benign.


5) Did you use anti-seize on your plugs?


6) I would not advise in buying any used n55 engine and dumping it in the car and selling it. If you do not have the proper paper work proving that the used engine was in good shape and an m2 engine you will loose insane resale value since bmw already inspected it and now it will be on the car fax reports.


7) What I recommend is filing a claim through your car insurance, if you have comprehensive coverage that will count towards engine replacements. Your premiums will jump but I think the end cost will be less than doing a proper m2 engine replacement.

Originally Posted by ewant81

Sorry to hear about your engine! If you do replace the engine and start tuning again, I would strongly recommend getting a custom map with the car on some rollers. Failing that, get a wideband O2 sensor fitted with an AFR gauge so you can see when it's running lean.

It does sound like the Dinan flash map has made the engine run lean leading to excessive det.

Wide band o2 sensors are not needed on BMW's because the factory sensor is already wide band and can provide all the data required through the obd2 port, unlike most Japanese cars which use narrow band sensors making it a requirement to have those gauges. So no need to waste money one an AFR gauge and wide band sensor.

Originally Posted by akkando

Couldn't he just use bootmod to log or do a live reading of the sensors to find out if everything is as it should be?

Yes that is exactly what he could have done.

[F87source]

Originally Posted by Hankdoll

Perhaps, but we know it fits!

it will fit but it will be hard and expensive.

From the different wiring harness, different ecu's, different intakes, exhaust, different LPFP, different engine mounts, different cooling set up (meaning different mounting brackets, different under body trays for the oil cooler).


So not going to be an easy retrofit, and you have a bunch of extra stuff you have to buy.

[Poochie]

Originally Posted by F87source

7) What I recommend is filing a claim through your car insurance, if you have comprehensive coverage that will count towards engine replacements. Your premiums will jump but I think the end cost will be less than doing a proper m2 engine replacement.

Comprehensive auto insurance doesn't cover mechanical breakdowns, especially since it's already documented that it was a result of intentional tuning.



.

[F87source]

Originally Posted by Poochie

Comprehensive auto insurance doesn't cover mechanical breakdowns, especially since it's already documented that it was a result of intentional tuning.



.

Oh yes my bad, I get confused since collector/modified car insurance also includes mechanical break down insurance which is different than comprehensive.

[PackPride85]

Originally Posted by Poochie

It sounds like he had the $299 Dinan boost controller, not the Elite "Dinantronics" piggyback, with the supplementary warranty.

Regardless, he claimed he had removed the Dinan Sport, awhile back and went BM3 flash tuning, so Dinan's involvement is in this situation is completely irrelevant.

By design, the second you flash tune these vehicles through the OBD2 port, the ECU's 'checksum' triggers an incremental flash counter, with a sequenced date and time stamp attached, which is a dead giveway to anyone checking, how and when software was changed.

Thus, specifically the engine section of his warranty coverage would of been null & voided, either way. Case close, end of discussion.

Also, I bet you anything that he volunteered more information than what was necessary, to the dealer. So, he kind of sunk himself but I guess that's "right" thing to do.. Or so I've heard

It sounds like a used motor is in your future OP, good luck.

PTF claims the flash counter reverts to what is was before the tune when the car is reverted to stock. I'd be very curious to hear how the dealer figured out he had a "Dinan" tune. Did they actually see evidence of a flash or did the OP not completely remove the Dinan "chip" device?

[F87source]

Originally Posted by PackPride85

PTF claims the flash counter reverts to what is was before the tune when the car is reverted to stock. I'd be very curious to hear how the dealer figured out he had a "Dinan" tune. Did they actually see evidence of a flash or did the OP not completely remove the Dinan "chip" device?

He probably left the dinan tmap harness (since the sport tuner is only one cable) on while he brought the car for service, seeing that he probably thought it is a dinan tuner so it should be ok. Despite the fact that not all dinan products come with warranty, the sport tuner is an example. So when the tech saw it they marked it down.


Also I don't believe the flash counter is everything, there are probably other mechanisms the car can use to detect tunes, like boost deviation in comparison to fueling for piggy backs. Or hidden ghost codes for flash tunes. There is even data stored on the key.

[PackPride85]

Originally Posted by F87source

He probably left the dinan tmap harness (since the sport tuner is only one cable) on while he brought the car for service, seeing that he probably thought it is a dinan tuner so it should be ok. Despite the fact that not all dinan products come with warranty, the sport tuner is an example. So when the tech saw it they marked it down.


Also I don't believe the flash counter is everything, there are probably other mechanisms the car can use to detect tunes, like boost deviation in comparison to fueling for piggy backs. Or hidden ghost codes for flash tunes. There is even data stored on the key.

Right but usually thats not something the dealer checks for in their service bay. I've heard of BMW corp sending engineers down to collect that data themselves, which likely could have happened anyway with a blown motor. This just seems like they saw some mod non BM3 related. Unless they saw some flash tampering and just assumed it was a Dinan flash.

[F87source]

Originally Posted by PackPride85

Right but usually thats not something the dealer checks for in their service bay. I've heard of BMW corp sending engineers down to collect that data themselves, which likely could have happened anyway with a blown motor. This just seems like they saw some mod non BM3 related. Unless they saw some flash tampering and just assumed it was a Dinan flash.

If the service technician sees it and feels like reporting it they will. That was probably what occured in this case.

[matty_f]

I’d see if Carbahn can rebuild it for you. They sell performance S55 engines, maybe they’ll do an N55 too.
https://carbahnautoworks.com/product...83-m4-f87-m2c/

[F87source]

Originally Posted by matty_f

I’d see if Carbahn can rebuild it for you. They sell performance S55 engines, maybe they’ll do an N55 too.
https://carbahnautoworks.com/product...83-m4-f87-m2c/

+1

or try vac too.