Qs on SPT Catback
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This is a discussion on Qs on SPT Catback within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I purchased a used SPT catback for my 2014 hatch. When it arrived the midpipe had rust spots all over ...

  1. #1
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    Erie, CO
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    Qs on SPT Catback

    I purchased a used SPT catback for my 2014 hatch. When it arrived the midpipe had rust spots all over it. I tried the trusty magnet test and the midpipe is not stainless steel. According to Autonation Subaru Arapahoe Parts the whole system should be SS. Can anyone tell me if I got the correct midpipe?

    The muffler is all SS except for the flange at the midpipe. On the midpipe the flange is SS while the rest is steel.

    The midpipe is 2 1/2" OD, I was thinking it would be 3". Which is correct?
    2014 Crazy Cart
    2014 WRX 5 door base model
    2013 5/8ths scale Lotus 7 http://s1261.photobucket.com/user/sc...brary/Baby%207
    2011 Ram 1500
    2004 Caterham 7 SV http://www.britishv8.org/Other/SkipCannon.htm
    1992 Mazda Miata

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  3. #2
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    Mar 2003
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    Erie, CO
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    I stopped by a Subaru dealer today with magnet in hand and the parts guy took me back in the stockroom and opened up the boxes for the SPT catbacks for the WRX and the STi.

    Both had steel midpipes although the advertising says the complete system is stainless steel. The STi midpipe is 3" and the WRX is 2 1/2".

    So I have the correct midpipe but closer inspection reveals that the flanges on both ends of my midpipe and on the muffler are bent. I will try to straighten them but it may be difficult to get good seals on both ends of the midpipe.
    2014 Crazy Cart
    2014 WRX 5 door base model
    2013 5/8ths scale Lotus 7 http://s1261.photobucket.com/user/sc...brary/Baby%207
    2011 Ram 1500
    2004 Caterham 7 SV http://www.britishv8.org/Other/SkipCannon.htm
    1992 Mazda Miata

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