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  1. #1
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    Rust on 1 year old Exhaust tips? Really?

    I've got 2 4" Black Powder Coated exhaust tips on my muffler delete, and in less than a year they already have a rust spot on them (inside edge, both tips).

    I won't name the company, but I'm just really surprised. They DON'T put salt on the roads here in the winter, but they do use mag chloride (liquid), which is corrosive, just not as bad as salt.

    Aside from masking off my entire rear end and just spray painting the tips, what else can I do to fix rust on powder coat?
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  2. #2
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    Bump.
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  3. #3
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    Is it actually rusting into the tip or just surface rust? Try wiping it off with CLR or similar first.
    2009 335i coupe back to stock...for now

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  4. #4
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    Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
    Is it actually rusting into the tip or just surface rust? Try wiping it off with CLR or similar first.
    +1 also keep in mind alot of ethanol fuels will hold some sort of water/moisture which over time can start to rust steel parts.
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    FBO's. Spec S2+. E85.

  5. #5
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    Id try some fireplace grate cleaner.
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  6. #6
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    I'll try to buff with some CLR, i was just worried about screwing up the powdercoat and forcing myself to paint them.
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  7. #7
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    why not mention the company?
    09 6AT 335i Coupe M-Sport - SOLD
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  8. #8
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    Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
    why not mention the company?
    I guess I'm trying not to call out a company on the forums if the problem is easily fixable.

    But I laughed when I realized after I posted the company is in my signature haha. oops.
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  9. #9
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    DiMisa Tips? I mean, it's really not "name brand" (Borla, Fabspeed, B&B, Active, etc) stuff so there's no guarantees with the quality. But pics would've helped to see the rust & where it's accumulating.
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


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  10. #10
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    How bad is the rust? I was going to say just replace the tips or get them coated again yourself.
    Chrome Space Bar Issue: http://www.boostaddict.com/showthrea...338#post738338


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  11. #11
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    Post some pics! Unfortunately, in your climate, I would assume the winter will take it's toll on most exhaust systems
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    ESS 6XX kit

  12. #12
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    Click here to enlargeClick here to enlarge

    The passenger side spot is bigger.
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  13. #13
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    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  14. #14
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    Click here to enlarge Originally Posted by I6+TT=FTW Click here to enlarge
    Click here to enlargeClick here to enlarge

    The passenger side spot is bigger.
    That's ugly man, I wouldn't be happy. Why not just ditch it?
    Chrome Space Bar Issue: http://www.boostaddict.com/showthrea...338#post738338


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  15. #15
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    YEa that sucks. I would send pics to the manufacturer and see what they do.
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    ESS 6XX kit

  16. #16
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    ^Agreed. It is a bit odd that the rust is accumulating on opposite sides in "dimple" spots
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

  17. #17
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    I sent the company an email last night with photos and a screenshot of the paypal transaction.
    They just said it isn't common but can happen from time to time. And then told me to just go buy some stainless steel cleaner from Ace and clean the tips.
    Stainless steel cleaner on powdercoat?

    and Sticky, I was hoping to be done with the exhaust for now so i can worry about other parts of the car (maintenance, FMIC, tune, etc). I actually like the muffler delete, and would prefer to keep the setup (possibly add vibrant resonators and an xpipe at some point).
    2007 Jet Black E90 335xi "The Mistress" / PTF-Cobb / E50 / FuelitS2 / 5" Stepped FMIC / Synapse BOV and Charge Pipe / Alpina Flash / Muffler Delete w/ 4in Black Tips / DCI / 19x8.5 Satin Black Squared Enkei Raijins / 245/35/r19 Bridgestone Potenza S04 Pole Position / 20mm Rear Spacers / 2 10" Rockford Fosgate's Added to Logic7 (15 total speakers!)
    [IMG]Click here to enlarge[/IMG]

  18. #18
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    I have no advice at this point if they won't replace it for you.
    Chrome Space Bar Issue: http://www.boostaddict.com/showthrea...338#post738338


    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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