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      05-31-2017, 03:15 PM   #1
HUACHENBAOMA
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【Help!】 M3 with Blown Engine

You may find my original post in my profile. But what happened generally is that my M3 jumped on timing and result in several bet valves, BMW has denied the warranty.

They said JB4 caused this LMAO

I have unhooked the JB4 when the first time drivetrain malfunction comes on and the car stalled out bone stock!

How can I defend myself against their decision? I heard people fighting denied warranty and turns out covered. But my question is, who should I talk with in this situation? Who is the guy that decide the fate of a car?

By the way my adviser throw me the number of BMW cost service. I tried, they could not speak technically, and all they do is throw me back to dealer.

Last edited by HUACHENBAOMA; 09-28-2017 at 01:50 PM..
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      05-31-2017, 03:24 PM   #2
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Yep, LMAO indeed. Good luck to you; hope it all works out for the best!
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      05-31-2017, 03:33 PM   #3
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U had a 9k money shift and U had a jb4 running higher hp than stock. I think ur best bet is to push for a good will repair
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      05-31-2017, 03:40 PM   #4
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Quote:
Originally Posted by HUACHENBAOMA View Post
You may find my original post in my profile. But what happened generally is that my M3 jumped on timing and result in several bet valves, BMW has denied the warranty.

They said JB4 caused this LMAO

I have unhooked the JB4 when the first time drivetrain malfunction comes on and the car stalled out bone stock!

How can I defend myself against their decision? I heard people fighting denied warranty and turns out covered. But my question is, who should I talk with in this situation? Who is the guy that decide the fate of a car?

By the way my adviser throw me the number of BMW cost service. I tried, they could not speak technically, and all they do is throw me back to dealer.
That's why I don't like turning cars, loss of warranty + malfunctions like the one you mentioned.

The only tune I'd ever do is one that is supported by the manufacturer like a Dinan Tune

Last edited by Ultra Male; 06-03-2017 at 11:54 AM..
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      05-31-2017, 03:41 PM   #5
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Quote:
Originally Posted by HELLOimJ View Post
U had a 9k money shift and U had a jb4 running higher hp than stock. I think ur best bet is to push for a good will repair
yeah but how? whoes the best guy to beg for? Custom relation? or Cost department?
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      05-31-2017, 04:06 PM   #6
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Lmao. Good Luck
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      05-31-2017, 04:19 PM   #7
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I hate to be the bad guy, but once BMWNA or your dealer knows that you modded the tuning etc.. of the engine you are pretty much screwed. Why would a dealer or BMWNA pay for something they didn't cause? Maybe you can get the dealer to hook you up with a deal on the new motor? worth a shot to ask. I am not a service expert, maybe you can reach out to Charlie@McKennaBMWService he is forum sponsor and also a top rated service adviser, he may be able to shed more light on the process. Keep us posted.
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      05-31-2017, 04:39 PM   #8
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Quote:
Originally Posted by GOLFFRR View Post
I hate to be the bad guy, but once BMWNA or your dealer knows that you modded the tuning etc.. of the engine you are pretty much screwed. Why would a dealer or BMWNA pay for something they didn't cause? Maybe you can get the dealer to hook you up with a deal on the new motor? worth a shot to ask. I am not a service expert, maybe you can reach out to Charlie@McKennaBMWService he is forum sponsor and also a top rated service adviser, he may be able to shed more light on the process. Keep us posted.
thanks
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      06-01-2017, 10:41 AM   #9
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Quote:
Originally Posted by HUACHENBAOMA View Post
You may find my original post in my profile. But what happened generally is that my M3 jumped on timing and result in several bet valves, BMW has denied the warranty.

They said JB4 caused this LMAO

I have unhooked the JB4 when the first time drivetrain malfunction comes on and the car stalled out bone stock!

How can I defend myself against their decision? I heard people fighting denied warranty and turns out covered. But my question is, who should I talk with in this situation? Who is the guy that decide the fate of a car?

By the way my adviser throw me the number of BMW cost service. I tried, they could not speak technically, and all they do is throw me back to dealer.
Hey brother,

Well unfortunately due to circumstance there are a dozen possibilities of why or how your engine jumped timing, the JB4 being a culprit is more than likely why your dealer is denying the claim. Granted the add on of the piggyback could have potentially caused other things to happen especially with supporting modifications and the possibility of unknown fuel mixtures. You stated that the vehicle stalled out bone stock, now although that may be entirely true, it doesn't take away from the fact that "something" was installed previously which is something that can be seen with enough digging if you catch my drift.

In this particular case I'm not entirely at liberty of instructing you on what you can do or what you can't do... At the very least it may be in your best interest to submit a case with BMW customer relations and take it from there, voicing your opinions and concerns will have to be a start and see what the representative says...

Best of luck to ya brother, let me know how things turn out.
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      06-01-2017, 10:47 AM   #10
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You need to speak to the BMW representative for your region, as well you may need to speak with a local TSE. Where are you located?
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      06-01-2017, 10:54 AM   #11
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To be more specific it's the BMW after sales regional manager. He would be able to approve a goodwill claim for your motor. If you're a loyal BMW client, it will be a lot as easier!
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      06-01-2017, 12:03 PM   #12
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If BMW saw proof of engine exceeding maximum RPM it's almost impossible to get them to warranty it. Going in with mods installed just makes it that much easier for them to get out of it.

I suggest finding a good indy shop and having the factory motor rebuilt/repaired. It will be 1/2 the cost of what the dealership will charge or even less.

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      06-01-2017, 12:21 PM   #13
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
If BMW saw proof of engine exceeding maximum RPM it's almost impossible to get them to warranty it. Going in with mods installed just makes it that much easier for them to get out of it.

I suggest finding a good indy shop and having the factory motor rebuilt/repaired. It will be 1/2 the cost of what the dealership will charge or even less.

Mike
Quote:
Originally Posted by Mike@N54Tuning.com View Post
If BMW saw proof of engine exceeding maximum RPM it's almost impossible to get them to warranty it. Going in with mods installed just makes it that much easier for them to get out of it.

I suggest finding a good indy shop and having the factory motor rebuilt/repaired. It will be 1/2 the cost of what the dealership will charge or even less.

Mike
Thanks for your opinion, I'm starting to look for used cylinder head
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      06-01-2017, 01:19 PM   #14
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Originally Posted by HUACHENBAOMA View Post
Thanks for your opinion, I'm starting to look for used cylinder head
It would also be in your best interest to do a proper tear down or at the least/worst scenario do a leak down test. I have an M4 in the shop with a blown motor(similar situation) and a chunk of the piston appears to have been bitten off and in short needs a complete engine.
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      06-01-2017, 01:26 PM   #15
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I have a whole spare head here at the shop if you want me to rebuild it with new valves and swap out yours as a core.
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      06-01-2017, 02:18 PM   #16
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Quote:
Originally Posted by TPG Tuning View Post
I have a whole spare head here at the shop if you want me to rebuild it with new valves and swap out yours as a core.
Quote:
Originally Posted by TPG Tuning View Post
I have a whole spare head here at the shop if you want me to rebuild it with new valves and swap out yours as a core.
Pm sent
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      06-01-2017, 04:12 PM   #17
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Good luck. Everything will avoid under warranty because aftermarket jb4.
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      06-02-2017, 06:48 PM   #18
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Is your car a manual? Did you really over rev it?
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      06-03-2017, 11:21 AM   #19
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You probably don't want to hear this but you took the risk going with some cheap off the shelf aftermarket tune. Not surprised at all that BMW denied your warranty claim.
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      06-03-2017, 11:35 AM   #20
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Quote:
Originally Posted by damnitBobby View Post
You probably don't want to hear this but you took the risk going with some cheap off the shelf aftermarket tune. Not surprised at all that BMW denied your warranty claim.
Quote:
Originally Posted by damnitBobby View Post
You probably don't want to hear this but you took the risk going with some cheap off the shelf aftermarket tune. Not surprised at all that BMW denied your warranty claim.
What fancy expensive mode do u have on urs
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      06-03-2017, 11:42 AM   #21
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Sorry to hear that!

But I dont get it why people wants to squeeze more power out of the M4!!!??

The car is giving me 470-480 BHP and up to 600 NM I see it all the time on Sports Display! If the car needs more power BMW M would had given it from the beginning, do you think it is difficult for them? BMW and Porsche always use a moderate power they want the car to drives better, also I reckon you update the whole suspension because the stock suspension can barely work with the stock power....
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      06-03-2017, 11:51 AM   #22
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Quote:
Originally Posted by HUACHENBAOMA View Post
What fancy expensive mode do u have on urs
My e92 was all OEM and my '18 F80 will be kept all OEM as well.

My post wasn't to call you out, but I don't understand the line of thinking that jb4 or other aftermarket tunes are must have mods. You're screwing up perfectly fine OEM engineered tune with some bogus off the shelf aftermarket tune.

But hey you live and you learn.
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