There may be a rubber bushing or spacer in there. probably only a couple dollars, and the only place to be able to identify or purchase that part would be the dealer.15.9 @ 86.7mphInjen CAI, 55mm TB, P&P Intake, Crower Cams, Hooker Header, ERT/Catco Cat, GS-T Muffler, AFX UDP, Crane Ign Amp, S-AFC