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      09-27-2012, 01:45 PM   #4
C'sM3
Private First Class
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Drives: 2016 328i xdrive wagon
Join Date: Feb 2010
Location: Charlotte, NC

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Nice! If I'm not mistaken I think this is the only company offering high flow replacement cats with the DP's? Or at least at a reasonable price.

One more question. I don't know if you will be able to answer this, but the one concern I can see with Ultimate Racing's DP's are that they do not have a flex point in their DP's. All other manufacturers that I have seen have a flexible section of their DP which allows the motor to torque without stressing the DP's. I am concerned that over time the welds or the pipe would crack from stress :-/ Have you noticed any leaks from the DP's?
Appreciate 0