[///Madgreek1]

Originally Posted by jackstrath

Interestingly mine has 13538625396 fitted, did yours have 13-53-7-639-990?

That alone would be good to document, also id like to know what kinda fuel you had been running, and if always serviced ect and if any injector treatments used?

I'm going to begin tearing down and documenting tomorrow, so I'll update as to what part number I had been running. Curious to see if any of the other documented failures were running the earlier p/n as well. That definitely leads me to believe that there may have been something known about the injector problem...

[Rockyca]

Very interested to see the results. What does real oem list for your car?

[///Madgreek1]

Originally Posted by Rockyca

Very interested to see the results. What does real oem list for your car?

Realoem shows: 13538625396

But also says: supercedes 13537639990 (10/01/2015 — 07/26/2017)

(My cars production date was 11/12/2015)

[cooolone2]

Although I may not offer anything the OP is looking for, I will say you're a fish swimming upstream!

Did the MOD's you put on your engine actually cause the failure? Maybe and in all probability not, but their warranty exclusion will give them a major leg up if you try and decide to litigate. Unless you have very deep pockets and can hire engineers to support your claim, finding documentation and that "Unicorn" to prove your case online will be basically impossible. Fact is, they have it all, and you want to get a little piece. Only thing that may work is to become such a PITA, that they throw you a bone!

I'm curious though... And is a real question...

When the engine seized, did you have the car brought directly to the dealer? I'm curious because I would imagine, with such minor MOD's on a car, it would've been better to have it towed home and put all the stock parts back on, revert the DME to stock, and then had it brought to dealer. Ethical? No, but what they don't know, they don't know. "THEN" they would have to "PROVE" user error, or the engine was operating outside acceptable manufacturer tolerances. Just my $.02

Best of Luck though¡

[BMWILUVU]

Originally Posted by ///Madgreek1

Certified pre-owned but not by BMW dealership (Honda dealer, so not REALLY certified lol)

I believe they can see when the DME was flashed (not sure though), negating any arguement that it was the previous owner.

BMW dealers for certified pre-owned only. This car may have had pre-existing problems which your tune caused to worsen. The bore is coated and not sleeved so I can see custom work getting expensive.

[///Madgreek1]

Originally Posted by cooolone2

Although I may not offer anything the OP is looking for, I will say you're a fish swimming upstream!

Did the MOD's you put on your engine actually cause the failure? Maybe and in all probability not, but their warranty exclusion will give them a major leg up if you try and decide to litigate. Unless you have very deep pockets and can hire engineers to support your claim, finding documentation and that "Unicorn" to prove your case online will be basically impossible. Fact is, they have it all, and you want to get a little piece. Only thing that may work is to become such a PITA, that they throw you a bone!

I'm curious though... And is a real question...

When the engine seized, did you have the car brought directly to the dealer? I'm curious because I would imagine, with such minor MOD's on a car, it would've been better to have it towed home and put all the stock parts back on, revert the DME to stock, and then had it brought to dealer. Ethical? No, but what they don't know, they don't know. "THEN" they would have to "PROVE" user error, or the engine was operating outside acceptable manufacturer tolerances. Just my $.02

Best of Luck though¡

Engine never seized, it is actually still driveable, just with a wicked misfire. And yes I did flash back to stock before I took it in. It didn't make any difference though, they could still see the flash counter was out of sync. So any tuner claiming their.flash cant be "seen" after reverting to stock, while there may be no trace of what the software was, BMW can definitely see that you flashed something.

[PURE340i]

Originally Posted by ///Madgreek1

Engine never seized, it is actually still driveable, just with a wicked misfire. And yes I did flash back to stock before I took it in. It didn't make any difference though, they could still see the flash counter was out of sync. So any tuner claiming their.flash cant be "seen" after reverting to stock, while there may be no trace of what the software was, BMW can definitely see that you flashed something.

There is just 1 case if i recall correctly and it was a Mission Performance tune and it was covered under warranty, but i think this users spark plug broke and damaged the engine. They could of easily blamed the "tune" for causing a spark plug to break lol, but i think the Mission Performance M-boot helped BMW not trace back to the flash.

*M-Boot: M-Boot was developed by Mission Performance as an additional solution for all of our customers that either want to upgrade performance stage or "temporary" go back to stock for a dealer visit. Since M-Boot is a custom written bootloader, there is no additional chip/hardware needed to be added to the ECU. In addition of having the ability of reflashing the computer without sending it into our offices, M-Boot offers great features as Flash-Counter freezing and Calibration ID spoofing.

https://f30.bimmerpost.com/forums/sh....php?t=1652584

[les anderson]

Originally Posted by PURE340i

There is just 1 case if i recall correctly and it was a Mission Performance tune and it was covered under warranty, but i think this users spark plug broke and damaged the engine. They could of easily blamed the "tune" for causing a spark plug to break lol, but i think the Mission Performance M-boot helped BMW not trace back to the flash.

*M-Boot: M-Boot was developed by Mission Performance as an additional solution for all of our customers that either want to upgrade performance stage or "temporary" go back to stock for a dealer visit. Since M-Boot is a custom written bootloader, there is no additional chip/hardware needed to be added to the ECU. In addition of having the ability of reflashing the computer without sending it into our offices, M-Boot offers great features as Flash-Counter freezing and Calibration ID spoofing.

https://f30.bimmerpost.com/forums/sh....php?t=1652584

I think a lot of how these issues are handled vary dealer to dealer. Dealers in my market are super high volume, and I can tell that they know how to work the system- not in a fraudulent way- but in a way to delivers efficiency to them and their customers.

I would expect the smaller market dealers are simply not as good- bmw is much more likely to get involved on weird cases, etc.

Re M-Boot- is that verified? Is there more info on this system? This is major reason to go MHD > Bootmod3.

[G.Newt]

Originally Posted by ///Madgreek1

I'm going to begin tearing down and documenting tomorrow, so I'll update as to what part number I had been running. Curious to see if any of the other documented failures were running the earlier p/n as well. That definitely leads me to believe that there may have been something known about the injector problem...

Didn't know if you missed my previous post or the other guys' or just ignored them, but, I highly doubt (although I'm super curious) you'll find a different injector part number.

According to Real OEM, our LCI's have only had 1 injector part number, the xx396. The "supersedes" most likely means BMW retroactively fitted BMWs using the older injectors with the new one, but it looks like we had the newer part from the get-go. That old part number doesn't even show up for our LCI B58's.

BUT, I understand your position, and wanting to be 100% sure you have the correct part number in question that caused the failure.

[jodimyer]

1st time BMW owner here and not a happy one. I just bought my used 340i with 35,000 miles. 2 weeks after getting it, the fuel injector fails the day after taking it to the dealership for its 36,000 mile check up (they put Champion spark plugs in). So I take it back to the BMW dealership and they say they will cover that repair of the fuel injector under the warranty. Then... they get more error codes after putting the new injector in. Now the dealership says there is scoring on cylinder 6 and needs a new engine and they won't honor the warranty because they "claim" there was a tune on it.
I'm a mom, I don't even know what a tune is. And the used car lot I purchased from claims there was no tune. At this point, I am telling the BMW dealership that they need to prove that there was a tune and link it to my VIN or else I'm going to fight. This mama is mad.

[sspade]

@jodimyer

There is a (software) flash counter built into the DME. They can easily check if the car was flashed with an aftermarket tune.

It sounds like that's what they already have done. Going to be an uphill battle.

[StannisBaratheon]

Originally Posted by sspade

@jodimyer

There is a (software) flash counter built into the DME. They can easily check if the car was flashed with an aftermarket tune.

It sounds like that's what they already have done. Going to be an uphill battle.

I'm not a lawyer but shouldn't BMW have known there was a tune during the inspection process before they sold the car that was represented to still have it's warranty intact?

If the dealership doesn't make it right then OP should escalate to BMW of North America and if they don't make it right then they need to decide if it's worth the legal costs to fight for a new engine.

[sspade]

Originally Posted by StannisBaratheon

I'm not a lawyer but shouldn't BMW have known there was a tune during the inspection process before they sold the car that was represented to still have it's warranty intact?

If the dealership doesn't make it right then OP should escalate to BMW of North America and if they don't make it right then they need to decide if it's worth the legal costs to fight for a new engine.

You're not wrong in your line of thought but, she said she bought it from a "car lot" not a BMW dealer. Realistically the car lot had no idea the car was tuned and probably had no ill intentions.

[sspade]

Its sad that some bastard obviously bought the car... beat it to within and inch of its life and sold it. I honestly couldn't do that in good conscience!

[G.Newt]

Originally Posted by jodimyer

1st time BMW owner here and not a happy one. I just bought my used 340i with 35,000 miles. 2 weeks after getting it, the fuel injector fails the day after taking it to the dealership for its 36,000 mile check up (they put Champion spark plugs in). So I take it back to the BMW dealership and they say they will cover that repair of the fuel injector under the warranty. Then... they get more error codes after putting the new injector in. Now the dealership says there is scoring on cylinder 6 and needs a new engine and they won't honor the warranty because they "claim" there was a tune on it.
I'm a mom, I don't even know what a tune is. And the used car lot I purchased from claims there was no tune. At this point, I am telling the BMW dealership that they need to prove that there was a tune and link it to my VIN or else I'm going to fight. This mama is mad.

Does the dealer have pictures of the scoring on the cylinder wall? Ask for those. Have a trusted mechanic look for metal in your oil due to the scoring. A compression and leakdown test to see how healthy the engine is.
Alternatively, a used engine is ~$3,500 + labor for install and fluids.

[f30b58pwr]

jodimyer Was this car purchased as a CPO? Was it purchased at a BMW dealer or private dealer/private party sale? These factors would impact how they proceed going forward.

Which dealer have you taken it too and have you tried taking it to another dealer (granted they haven't already flagged your VIN)?

[eksigned]

Originally Posted by F32Fleet

What sort of engine air filter? I'd look there first.

What oil were you running?

engine air filter? for a case like this? may i ask what the significance is here with the aftermarket air filter? i also have dinan's cai too by the way. i ask because when replacing the filter, i noticed a good amount of dirt and dust within the elbow behind the dinan filter. i took this as being normal (burns off) and went about my day. are you suggesting that a bad air filter could have led to this scoring and failure?

[F32Fleet]

Originally Posted by eksigned

engine air filter? for a case like this? may i ask what the significance is here with the aftermarket air filter? i also have dinan's cai too by the way. i ask because when replacing the filter, i noticed a good amount of dirt and dust within the elbow behind the dinan filter. i took this as being normal (burns off) and went about my day. are you suggesting that a bad air filter could have led to this scoring and failure?

Yes. A poorly designed or ill-fitting air filter could case scoring of the cylinder walls.

[eksigned]

Originally Posted by F32Fleet

Yes. A poorly designed or ill-fitting air filter could case scoring of the cylinder walls.

can you elaborate? from particulates entering or...?

[F32Fleet]

Originally Posted by eksigned

can you elaborate? from particulates entering or...?

It's possible that some dirt got past the engine air filter.

Of course it could be caused by something like over fueling which washes away oil film. It just depends on what the scoring looks like.

[jodimyer]

They are claiming that they are not allowed to give me pictures or prove to me that there was a tune on it.

[jodimyer]

I purchased it from a used car lot. I have not tried to take it to a different dealer as they have my vin. I've escalated to customer relations for second time now that they are telling me that they can't share proof of a tune.