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      06-14-2011, 09:03 PM   #33
lgk
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Drives: 2013 M3
Join Date: Mar 2011
Location: Charlotte, NC

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Terry's cable is truly proprietary. It will not work with a standard serial to USA. I had a Magnaflow system installed-much lighter, direct bolt on with no cutting.

When I first drove it, it was strange-it actually felt less powerful. I was concerned that the low RPM torque power delivery was effected by the lower back pressure.

I reset the ecu and drove for 20 miles and it felt better. I then raised the boost to 4 PSI. Seat pants it is truly hard to know whether their is much difference in power, especially when dealing with the extra noise. I don't necessarily consider the sound appealing but that is subjective.
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