Shouldn't effect clutch life either way, unless your clutch wasn't fully engaging before in which case you would slip a lot and then shorten the life.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