would installing a performance exhaust void my warranty

[E90DTM]

Would installing a performance exhaust void my warranty ?

Ouch I never thought about that, and I've already made an appointment with the muffler shop.

=[

[gtp e38]

no, the Magnuson-Moss act protects you.

[E90DTM]

oh alright thanks, my bro was scaring me lol =/

[gtp e38]

oh alright thanks, my bro was scaring me lol =/

the only thing that might be questionable/red flag for warranty is removal of the cats by way of *catless downpipes* that I see companies like Riss Racing, Ultimate Racing, etc selling.

[raceyBMW]

It won't directly void your warranty. But if something were to go wrong, say wastegate issues or something similar, BMW could give you a hard time with an aftermarket exhaust and blame the failure on it. It is always recommended to remove mods before going in to the Dealer for something like a limp mode or CEL.

[ssigur]

BMW installed a Borla cat-back for me. They said as long as you leave the cats alone there is not going to be an issue.

[ChitownIrish]

BMW installed a Borla cat-back for me. They said as long as you leave the cats alone there is not going to be an issue.

Can you post a picture? How do they sound? What did BMW charge you?

Thanks.

[raceyBMW]

BMW installed a Borla cat-back for me. They said as long as you leave the cats alone there is not going to be an issue.

That's good to know. I also wonder about intake too, because I just put one in mine, and I don't want to put the stock back in every time they need to pop the hood.

[StigNV]

BMW installed a Borla cat-back for me. They said as long as you leave the cats alone there is not going to be an issue.

They did mine as well, $250 to install. The catback was purchased through Summit Racing

[E90DTM]

thanks for the info, i wont be touching the cats so it should be ok then.


That's good to know. I also wonder about intake too, because I just put one in mine, and I don't want to put the stock back in every time they need to pop the hood.

yeah i also just installed an aFe intake, but i doubt that would void the warranty.

[Sailvi767]

If the mod increases HP they could deny a drivetrain warranty claim. They design the drivetrain for a specific HP. If you increase the HP and something breaks it becomes a goodwill issue with the dealer. Its not likely they will make to much noise about a cat back. However chip the car and have a cat back and have your transmission fail they will likely not cover it.

[Terry @ BMS]

It will if it causes the problem. I've heard of turbo repairs, etc, denied due to exhaust modifications.

[jaydee172]

read the warranty and find out