[razzle45]

So I noticed a coolant line was leaking then later when doing a pull in low gear I lost boost and smoke was coming out of the tailpipe. Drove slowly to BMW to have it diagnosed. They ended up changing the water pump (2nd time) and the PCV valve cover. They took it on a test drive afterwards and noticed it still wasn't building boost.

I've messed around with bimmercode and additionally added a M track module to it so the car thinks its a G80 or at least the infotainment system does. I believe I also messed with an option on bimmercode called xtraboost. The dealer denied covering the turbo failure under warranty because they saw the module for the M track cluster plugged into the wiring harness and suspect it's tuned. I told them to pull the engine data and send a report to BMW NA.

After some seconds thoughts I'm a little nervous that the xtraboost option in bimmercode may have caused all of this cause what are the chances a stock motor would blow a turbo? I don't have a downpipe, tune, or even intakes for this exact reason. Could someone do me a favor and check if their 2022 M340i mild-hybrid has this xtraboost option on or off stock? It will help me sleep at night at least knowing if this is on by default for the mild hybrid or if its just for the 330e models. As a side note, I ordered the car, couldn't hold back and was driving it pretty hard from 50 miles on the odometer. It now has about 43k miles in a span of 2yrs. I'm not sure how much that could play into it but honestly I'm hoping its that for the sake of the warranty covering it. Any input would be greatly appreciated!

I spoke with the rep again, and keep in mind he is just a middle man, but basically he relayed to me that the turbo is building absolutely zero boost and there are no messages on the infotainment so that is another reason as to why they suspect the car is tuned when it is not. I'm not sure whether or not this is true but maybe it could be that the M track module I added is preventing the fault to be relayed to the system correctly. Either that or a boost leak somewhere but I'm pretty sure a boost leak would cause a fault light to show up. Again any input would add a few hours back to my sleep! hahah thanks again.

[northan]

I can’t speak to the 340 default specs, but I thought xtraboost is only for the 330e and is an electric only boost, nothing to do with turbo boosting.

[BLK.G20]

The xtraboost feature does absolutely nothing on the M340.

[thaRizzler]

Originally Posted by razzle45

I spoke with the rep again, and keep in mind he is just a middle man, but basically he relayed to me that the turbo is building absolutely zero boost and there are no messages on the infotainment so that is another reason as to why they suspect the car is tuned when it is not. I'm not sure whether or not this is true but maybe it could be that the M track module I added is preventing the fault to be relayed to the system correctly. Either that or a boost leak somewhere but I'm pretty sure a boost leak would cause a fault light to show up. Again any input would be add a few hours back to my sleep! hahah thanks again.

Forgive the ignorance, but I was under the impression that if plugged in to an ISTA system the dealer would KNOW if the car was tuned or not. If you know for a fact it's not tuned, why are they guessing and not just replacing the turbo?

[razzle45]

They seem to be second guessing it because of the fact that they saw a module plugged into the wiring harness and the fact that the turbo is building no boost yet there are no messages on the dashboard raises a major red flag to them. This is typical, I think, of systems like JB4.

Also I believe when I had the M track module coded they used E-sys to code the car to believe its a G80, in terms of the infotainment. I'm not sure why or how or if this is even true but it seems this coding prevents error messages from being properly relayed to the system.

Would anyone know if it's possible to get the flag removed from my car if the engineer sees it's not tuned? I specifically didn't touch anything engine related for this issue. Granted I have heavily modified the electronics, headlights, tailights, and suspension.

[mike@x-ph.com]

With enough persistence, you should be able to over turn this and have them fix it under warranty.

you should also reach out to BMW directly

[BLK.G20]

Originally Posted by razzle45

They seem to be second guessing it because of the fact that they saw a module plugged into the wiring harness and the fact that the turbo is building no boost yet there are no messages on the dashboard raises a major red flag to them. This is typical, I think, of systems like JB4.

Also I believe when I had the M track module coded they used E-sys to code the car to believe its a G80, in terms of the infotainment. I'm not sure why or how or if this is even true but it seems this coding prevents error messages from being properly relayed to the system.

Would anyone know if it's possible to get the flag removed from my car if the engineer sees it's not tuned? I specifically didn't touch anything engine related for this issue. Granted I have heavily modified the electronics, headlights, tailights, and suspension.

PM me your VIN and I can check the flag status.

[razzle45]

What should I say to BMW? I'm honestly more scared of giving them more info as to what exactly I did. I'd almost prefer them to just check the logs and see that all the engine parameters are stock.

[mike@x-ph.com]

Originally Posted by razzle45

What should I say to BMW? I'm honestly more scared of giving them more info as to what exactly I did. I'd almost prefer them to just check the logs and see that all the engine parameters are stock.

you should be honest on what you have done to the car and tell them its got nothing to do with the turbo failure,present them with all the proof you have and they should honor the warranty

[BLK.G20]

^

[peelerec]

What Mike said. This requires some direct and concise communication and not allowing dealer to deflect or delay.

[razzle45]

I already told the service rep that the module is simply for the dashboard and the car is completely stock. I said this both when I dropped it off and reiterated it later on. The dealer denied it after I told them this when I dropped it off.

I also don't want to give too many details regarding the module because knowing dealers they give an stupid reason to write you off. I don't want them to say the module you put prevented you from seeing warning messages and so you kept driving it because you didn't know anything was wrong and that caused the turbo to blow.

[prostcfc]

If you've exhausted your options at this dealer, it may be worth trying another dealer as you have nothing to lose. Yes, there may be records with BMWNA, but dealers aren't cartels that collude with one another, and you may have better luck. Often people fall to the sunk cost fallacy versus abandoning and trying a different approach.

[braaaap]

Don't know what xtraboost is but I've seen eBoost come up on my dash before (m340i)

[Boostisfun]

The suspicion of engine tuning message from ISTA pops up when a vehicle test detects overboost. They don't even try to look for a tune anymore. Just, has your car made more boost than stock design by a significant amount that would only happen with a tune/piggyback or not.

[razzle45]

So if they can tell easily by simply plugging into ISTA why are they making a whole show out of nothing? My understanding is that if they quote me $8k for repairs, BMW NA would pay them at about half the labor rate so they would have an advantage if I were to pay it, but clearly I'm not going to pay an $8k bill for a stock turbo setup...

[Seer501]

If you noticed a cooling line leaking, why in the world would you do a hard pull? Your internal temp cooling directly effects the turbo.

[razzle45]

Originally Posted by Seer501

If you noticed a cooling line leaking, why in the world would you do a hard pull? Your internal temp cooling directly effects the turbo.

I noticed it after I saw smoke from the tailpipe. Before that, there were absolutely zero signs anything was wrong both from inside and outside of the car.

[razzle45]

So they just denied the claim citing the muffler delete being the cause of the failure. Does anyone have any suggestions? My only understanding of what could be done is to take it to small claims court but how likely would it be to get a positive outcome out of that?

[prostcfc]

People have already suggested reaching out to BMW NA for assistance. Have you done that? At this point, what is it going to hurt? I also recommended potentially trying another dealer, seeing as you're in Houston and there's more than one. It's pretty clear this dealer wants nothing to do with you (now saying the muffler delete is causing the issue is total nonsense). Do you really want them working on your car at this point?

[razzle45]

Originally Posted by prostcfc

People have already suggested reaching out to BMW NA for assistance. Have you done that? At this point, what is it going to hurt? I also recommended potentially trying another dealer, seeing as you're in Houston and there's more than one. It's pretty clear this dealer wants nothing to do with you (muffler delete causing the issue is total nonsense). Do you really want them working on your car at this point?

The claim has to go through BMW NA. What difference would it make going to another dealer? What difference would it make reaching out to BMW NA if they were the one's that processed the claim. They are just going to respond citing the same thing.

[prostcfc]

Originally Posted by razzle45

The claim has to go through BMW NA. What difference would it make going to another dealer? What difference would it make reaching out to BMW NA if they were the one's that processed the claim. They are just going to respond citing the same thing.

Is it BMW NA denying it? Are you sure about it, or taking the dealer at their word?