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What X-Pipe are you running?
The cold start on the sport is pretty loud but if I close the valve it quiets the low bass rumble. Have you considered having Gintani add the Valve? Wonder if they would retro fit for you.
Somebody needs to jump on this!
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11' E92 M3 Space Grey | DCT | ESS VT2- 625 | Gintani Race (valved) + Quad Res Catless X-Pipe | KW Sleeve's | GC Camber Plates|Arkym Diffuser | Vorsteiner VRS Lip | P3 Boost Guage | Stud Conversion
PHOTO's: Click Here ESS VT2 625 PHOTOS: Click Here |