Does MB USA has an approved/preferred tuner?
Last edited by Choy; Nov 4, 2011 at 12:30 PM. Reason: Spelling
That is why the Dinan tune M3 is more expensive that those un-warranted other tuners. Definitely, I will not be tuning my car. I did it once with my TT S4 but after the warranty was over. My M3 is stock and I don't see any reason why I want to tune it. The same with my new C63 AMG.
I am just wondering why there is no similar Dinan tuner for MB. IS MB's ECU a tightly guarded secret or just harder to decipher?
That is why the Dinan tune M3 is more expensive that those un-warranted other tuners. Definitely, I will not be tuning my car. I did it once with my TT S4 but after the warranty was over. My M3 is stock and I don't see any reason why I want to tune it. The same with my new C63 AMG.
I am just wondering why there is no similar Dinan tuner for MB. IS MB's ECU a tightly guarded secret or just harder to decipher?
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Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.




Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.
Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.
The same thing with BMW but Dinan will pay the cost if it comes to that point. So is RennTech and the like will not stand-up and support you?
Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.
And, while it might be unpopular on an enthusiast forum... MB corporate is in the right to do so, when appropriate.
Let's assume a hypothetical owner pays to have a non-sanctioned, third-party modified ECU tune loaded into his car - which is designed to run more aggressive timing and fuel parameters than stock, in order to achieve a greater-than-stock level of HP/TQ output.
In the event that there's any sort of subsequent engine or powertrain failure, why should MB be on the hook financially to fix it? The easy answer is, they shouldn't. They warranty the car to last 4 years or 50k miles, whichever's first (in the U.S.) in the configuration it was in when it left the factory. Magg/Moss protects claim denials on unrelated systems, but ECU tuning directly affects the engine and powertrain.
Some will say "just swap the ECU back to stock" which may be feasible... but it's also tantamount to fraud. Insurance fraud is serious business, and this is essentially the same concept. Those with legal expertise and/or background would have to determine if one might be criminally liable if such an event were to occur.
The easy solution is to leave the car stock during the warranty period, and then any failures during that period should absolutely be covered. Any failures after that period aren't covered anyway, so might as well go wild once that age/mileage anniversary is hit.
Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.
Any of you that think MB USA supports any tuners are only kidding yourself they don't.
MB Dealers that install tunes and tell you that it doesn't potentially cause you a warranty issue down the road are full of crap.
That doesn't mean that some dealers won't take care of you but if you do have a big engine problem watch how quickly MB USA will deny your warranty claim no matter how mod friendly your dealer is.



