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M5 F10 tuning from Performing Imports
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02-10-2013, 05:00 PM
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Used2be
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Drives: F90 M5 DG/Aragon
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Quote:
Originally Posted by
Rob///M5
I'm told stock has 2 cats. Primary is a 600 cell which is electronically monitored. Secondary is a 400 which is not monitored.
Interesting, thanks. Do you know if the 400 cell is also in the downpipe?
Appreciate
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