C63/C63S AMG
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Picked up a used C63 S, fairly sure it has catless DPs... a few questions.

Old Jul 28, 2020 | 12:03 PM
  #26  
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2017 C63S AMG
Originally Posted by untamedd
i think the dealer must have checked my ECU because my SA called and said he just noticed that the sec cats were gutted and asked me if I ever tuned the car. Didnt have a tune otherwise im sure they would have blamed the extra torque and would refuse to replace the rear diff.
my local dealer sells Renntech products and doesn’t bat an eye when I bring my catless, stage 2 ecu, stage 1 TCU C63S amg in for service. They even installed my subframe mounts and all of the techs were talking to me about them, asking questions as they’d never seen them for this car before.
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Old Jul 28, 2020 | 12:07 PM
  #27  
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AMG C63s
Originally Posted by Wexlax732
my local dealer sells Renntech products and doesn’t bat an eye when I bring my catless, stage 2 ecu, stage 1 TCU C63S amg in for service. They even installed my subframe mounts and all of the techs were talking to me about them, asking questions as they’d never seen them for this car before.
sub frame mounts?
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Old Jul 28, 2020 | 12:09 PM
  #28  
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2019 C63 S Coupe
Originally Posted by Wexlax732
my local dealer sells Renntech products and doesn’t bat an eye when I bring my catless, stage 2 ecu, stage 1 TCU C63S amg in for service. They even installed my subframe mounts and all of the techs were talking to me about them, asking questions as they’d never seen them for this car before.
I'm sure they won't care, until something breaks that can be blamed on your mods. The dealership doesn't care, but Mercedes corporate will and your dealership is unlikely to lie on your behalf to get a warranty claim approved -- your business almost certainly isn't as valuable as all the other, non-modded warranty claims they do.
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Old Jul 28, 2020 | 01:41 PM
  #29  
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AMG C63s Sedan , AMG C43 , AMG G63 , GLK 250
Originally Posted by zachr
I'm sure they won't care, until something breaks that can be blamed on your mods. The dealership doesn't care, but Mercedes corporate will and your dealership is unlikely to lie on your behalf to get a warranty claim approved -- your business almost certainly isn't as valuable as all the other, non-modded warranty claims they do.
EXACTLY !!
People need to understand that the APPROVAL is based on MB Corporate .. not the local dealership... Every warranty claim they MUST submit to corporate for approval . They have some "say so" in some, but if MB corp as for more info, or details , etc they have to give it. Remember that MB Corp has all history on that VIN.

with that being said, having a good relationship with your dealer and SA, can get things done, warranted , etc vs just driving upto any dealership and expecting it.
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Old Jul 29, 2020 | 01:40 PM
  #30  
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2019 C63 S Coupe
Originally Posted by elitex
If it’s tuned then drivetrain warranty is already toast. Getting Cats done would be about $1600 with labor as the cats alone are roughly $900.

I would definitely get a copy of the inspection report. These cars are fairly reliable so I wouldn’t sweat it too much. If there’s an issue that dealer wouldn’t cover then you can always have Solo fix it for fraction of the cost.
FWIW, I called Solo today and the downtown location at least said that they wouldn't be comfortable welding in cats because of how tight the space is under that heat shield. Getting numbers now for a few stock and aftermarket catted DP options, but they quoted 9 hours of labor for the job. Just thought that might be helpful in case anyone happens to come across this thread looking for this info
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Old Aug 19, 2020 | 11:18 AM
  #31  
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2019 C63 S Coupe
Does anyone happen to know the difference between the OEM downpipes for PFL and FL models of our cars? The dealer has offered the OEM pipes out of another C63 they have on their lot -- I didn't ask about the model year yet, but I know there were exhaust changes between PFL and FL. The part numbers are different (for the right side, 205-490-09-20 on PFL and 205-490-78-02 on FL), but the diagram looks identical to my untrained eye so I don't know if they'll fit if they're from a PFL car, or what the implications might be. For example, would these pipes make an FL car sound like PFL? I'd be most sad about losing the sound, really...
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Old Aug 19, 2020 | 11:37 AM
  #32  
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Originally Posted by zachr
Does anyone happen to know the difference between the OEM downpipes for PFL and FL models of our cars? The dealer has offered the OEM pipes out of another C63 they have on their lot -- I didn't ask about the model year yet, but I know there were exhaust changes between PFL and FL. The part numbers are different (for the right side, 205-490-09-20 on PFL and 205-490-78-02 on FL), but the diagram looks identical to my untrained eye so I don't know if they'll fit if they're from a PFL car, or what the implications might be. For example, would these pipes make an FL car sound like PFL? I'd be most sad about losing the sound, really...
I am not understanding this thread now. I would make them put it back to what it suppose to be, not Frankien Hack it together.. because the next time you have an issue, and maybe a different MB dealership looks at it , and see's mismatched stuff, they wont care what another dealer said etc etc..

I would Def NOT mix and match from a PFL and FL ... just my .02
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Old Aug 19, 2020 | 11:49 AM
  #33  
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Originally Posted by FLC63s
I am not understanding this thread now. I would make them put it back to what it suppose to be, not Frankien Hack it together.. because the next time you have an issue, and maybe a different MB dealership looks at it , and see's mismatched stuff, they wont care what another dealer said etc etc..

I would Def NOT mix and match from a PFL and FL ... just my .02
That's my inclination as well, but their other offers have been definitively disagreeable: $1000 (doesn't even cover the labor) or buy it back from me with a mileage adjustment (which I'm assuming means I lose the substantial TAVT and other fees I paid). This is the best of the options I have, it seems. The only reason I'd want to go OEM is the possibility that I'd maintain the warranty, and if they're from a PFL car I suspect that wouldn't be the case. Not sure if they're worth anything secondhand but I'd probably end up trying to sell them to get something with GESI cats installed instead. OTOH, it's still possible that the car they're offering DPs from is an FL so I dunno.
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