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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > For those of you that are catless

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      08-04-2016, 07:40 PM   #1
LBBDrew
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For those of you that are catless

For those of you that are catless or plan on going catless, what are you going to do when taking the car in for service/warranty work?
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      08-04-2016, 09:33 PM   #2
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I wanna know too. This question also include sport cat replacement.
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      08-05-2016, 02:24 AM   #3
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Twas never a problem with mine. 135
Even a couple of broken chargepipes didnt effect the claim.

Last edited by koastal; 08-05-2016 at 05:56 AM..
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      08-05-2016, 09:15 AM   #4
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My m135i has been back in for routine servicing, recalls and "QEP's" with sport cat DP and JB4 in situ - no issues.

If leaving JB4 in situ - just remember to set to map 0 and drive the car for 20-30mins to remove any "trace" of JB4 canbus monitoring from OBD2 port so as techs can plug n play into the car's system's w/o any issues.
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      08-05-2016, 10:36 AM   #5
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nothing. because they can't void your warranty over an exhaust modification. if you're worried about passing emissions though or not having a CEL just google iO2 cat sim
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      08-05-2016, 11:45 AM   #6
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Quote:
Originally Posted by comacow02 View Post
nothing. because they can't void your warranty over an exhaust modification. if you're worried about passing emissions though or not having a CEL just google iO2 cat sim
You are correct that they aren't going to void your warranty so to speak. But they could flag you and deny all future coverage on your engine...
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      08-05-2016, 11:48 AM   #7
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Quote:
Originally Posted by LBBDrew View Post
You are correct that they aren't going to void your warranty so to speak. But they could flag you and deny all future coverage on your engine...
Oh not this debate again...
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      08-05-2016, 11:49 AM   #8
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There's nothing to debate. Hence why I'm asking what people are doing when bringing their cars to dealers
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      08-05-2016, 12:02 PM   #9
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Quote:
Originally Posted by LBBDrew View Post
There's nothing to debate. Hence why I'm asking what people are doing when bringing their cars to dealers
Oh, your op is cool. Just didn't want to see the thread devolve into the tiresome voided warranty vs intact warranty but service refusal semantic bs.
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      08-05-2016, 01:09 PM   #10
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Quote:
Originally Posted by confusion View Post
Oh, your op is cool. Just didn't want to see the thread devolve into the tiresome voided warranty vs intact warranty but service refusal semantic bs.
All depends on the relationship with your dealer

MR
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      08-05-2016, 01:18 PM   #11
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Quote:
Originally Posted by LBBDrew
There's nothing to debate. Hence why I'm asking what people are doing when bringing their cars to dealers
For routine service you can leave all your mods on but for any type of warranty claim you'll want to revert back to stock.
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      08-11-2016, 05:15 PM   #12
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Unless you are taking the car for a problem that can be related to downpipes, the dealership will not give you a hard time ... I have never been asked to remove the DP before dealership visit
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      08-12-2016, 09:20 AM   #13
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I just do the work myself. Really don't want most dealership techs touching my car, I care about my own car more than they do. There are exceptions to this, I had a friend who was a good tech at the local BMW dealer that I would request. He actually cared about the marquee and did his best out of respect for the brand. But techs like that are few and far between, from both my experience and from what he tells me.
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      08-12-2016, 05:06 PM   #14
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Quote:
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I just do the work myself. Really don't want most dealership techs touching my car, I care about my own car more than they do. There are exceptions to this, I had a friend who was a good tech at the local BMW dealer that I would request. He actually cared about the marquee and did his best out of respect for the brand. But techs like that are few and far between, from both my experience and from what he tells me.
If you know how to and have the time for it, thats the best thing you can do.
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      08-25-2016, 04:40 AM   #15
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For those of you who went catless, install your cat back on and be environmentally responsible please
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      08-26-2016, 09:46 AM   #16
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Quote:
Originally Posted by paradoxical3 View Post
I just do the work myself. Really don't want most dealership techs touching my car, I care about my own car more than they do. There are exceptions to this, I had a friend who was a good tech at the local BMW dealer that I would request. He actually cared about the marquee and did his best out of respect for the brand. But techs like that are few and far between, from both my experience and from what he tells me.
+1

Also keep in mind, these techs can/may take your car for a ride.

Owning a Golf R, our cars came equipped with VW CarNet for a trial 6 month period. This allowed us to put up geo-fencing and trigger alerts if the car reached distance or speed traveled via app. A lot of the owners on the VWVortex forums had seen dealership techs "road test" the car after service. A forum member mentioned his car hit 100MPH so yeah....
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      08-31-2016, 10:39 AM   #17
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My experience with my M235i has been a breeze. My car has our Sport Cat Downpipe and Muffler Bypass Exhaust. I've taken my car in for a couple service appointments already and have never been questioned once about it. To be honest, majority of the questions are people asking why it sounds so good !
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      08-31-2016, 12:31 PM   #18
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Ditto as above with my m135i with sport cat DP and MPE my local bmw service dept are very complimentary about how it sounds and handles !
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      09-07-2016, 01:00 PM   #19
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Quote:
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Ditto as above with my m135i with sport cat DP and MPE my local bmw service dept are very complimentary about how it sounds and handles !
Isnt it great when your dealership is mod friendly? My car is FBO and the dealership never gave me any problems
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      09-10-2016, 05:16 PM   #20
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Better be safe than sorry, install the OE DP and have no issues with the dealer.
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