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Mysterious rear seat burning?

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Old Nov 17, 2009, 08:48 AM
  #61  
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hm

now that would be an unexpected seat warmer in the winter....
Old Nov 17, 2009, 11:07 AM
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Woh! I'm glad to be the first that found the problem.
If any representative from mitsu is reading this, I’m available to properly document the issue thru physical inspection at any dealer around my area.
i cover allready all the floor and backseats area with a termo shield carpet, it's working great! but it's easy to remove and see the preview burns
Old Nov 17, 2009, 12:01 PM
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I checked mine today, low and behold there seems to be some heat transfer on the passenger side towards the back of the seat where the foam started to melt into the black sound deadener. I applied some DEI Cool tape on the foam as that's all I had handy and left the seat loose so I could check the temps of that area after a spirited drive. This may have occured during my driving at Watkins Glen Road Course during warmer temps, it would be hard to believe that it was caused recently with the 40-50 F air temps we've had lately.

Looking under the car at that spot, it's well past the catback flange connection and somewhere above the midpipe. There are heat shields on the floorboards so I'm not sure how that much heat is getting up to the seats. I'll upload my pictures tonight when I get a chance.

Last edited by Hiboost; Nov 17, 2009 at 12:03 PM.
Old Nov 17, 2009, 12:15 PM
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Would This affect the 09 Ralliart guys that have single exit as well?
Old Nov 17, 2009, 04:46 PM
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just checked mine today when installing backup cam, yep, I got it too.
Old Nov 17, 2009, 04:58 PM
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take a pic of the underneath of the car so everyone can see how close it is etc to the body... for some reason I dont think the exhaust is going to get hot enough that far backstream to cause the foam inside to burn like that through metal.
It looks to me that maybe the sound deading had transferred to part of the foam... it looks like the deading is tar based.

Last edited by BoostWhore; Nov 17, 2009 at 05:00 PM.
Old Nov 17, 2009, 05:33 PM
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iam glad eric at ams is gonna check i out...
Old Nov 17, 2009, 05:49 PM
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Originally Posted by BoostWhore
take a pic of the underneath of the car so everyone can see how close it is etc to the body... for some reason I dont think the exhaust is going to get hot enough that far backstream to cause the foam inside to burn like that through metal.
It looks to me that maybe the sound deading had transferred to part of the foam... it looks like the deading is tar based.
No, it definitely is burnt. Smelling of burnt foam, and so hot it cannot be touched after some hard driving.
Old Nov 17, 2009, 06:13 PM
  #69  
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Subscribed........
Old Nov 17, 2009, 08:18 PM
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Guys, sorry I didn't have one single X on a lift today, which is pretty rare!
Old Nov 17, 2009, 08:45 PM
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Originally Posted by woodyqb
Greddy Ti-C here....same results, burnt seat.

After all these recalls, tsb's and now this I'm really considering a 335xi. I'm just about fed up with my $40k Mitsu. I really, really wanted to love the car but it seems like i have nothing but problems with it. Hopefully after I get all these things fixed I can start to enjoy it but for right now it's just a PITA
Have fun with the BMW maintenance.
Old Nov 17, 2009, 09:53 PM
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Dude that is crazy, glad it didn't actually catch fire...
Old Nov 17, 2009, 10:18 PM
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I took these pics 2 weeks back when I posted but just got around to posting them today.

I have a full T1R V1 dual exhaust. no heatshields.







Old Nov 18, 2009, 08:32 AM
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thats crazy its getting that hot, Insulating it like some are doing seems like a good idea... Just with the gas tank close by I hope it wouldnt cause any problems
Old Nov 18, 2009, 09:38 AM
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me and my brother's Xs have the same issue both with factory exhaust. No where near the level in those pictures though.

Last edited by unowned; Nov 18, 2009 at 09:43 AM.


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