S Striker187 Member : 2008 MS3 GT Sep 24, 2004 #21 yeah that would be me who measured it. the outer diameter may be 2.25" but the piping is quite thick so the inner diameter is really small. then again, i believe the evo makes 280ps on 45 mm piping!!!!
yeah that would be me who measured it. the outer diameter may be 2.25" but the piping is quite thick so the inner diameter is really small. then again, i believe the evo makes 280ps on 45 mm piping!!!!