Quote:
Originally Posted by Soylent
Mike or Andrew will these downpipes require a proper (non-piggyback) tune? I know for the STI this was the case. Are these motors/ecu different in these cars and able to adjust? What about with a JB4? Not sure I would want to be on the fringe with RaceChip.
@mike@x-ph.com
@andrew@activeautowerke.com
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No tuning needed
The STI downpipe issue is not present with BMWs as the BMW ECU automatically adjusts.
Jb4 or Racechip are both safe and reliable tunes, not needed for the downpipe but will add significant power