Quote:
Originally Posted by M3Power79
and what are you're first impressions?
Soundwise?
Power?
Throttle respons?
Thx.
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We have installed catless AR 3" DP. At Stage 2 GIAC software flash, it is worth about 8-12 whp over OEM. Catted version will be a bit less. The OEM DP's are actually very efficient and aren't the same ones BMW installed on the 135i and 335i.