is there anyone familier with the sirio EVO4 tuning setup? i've tried mine and it seemed the power is not as satifying as the EVO3 STI. Any advice on the clutch tuning for this EVO4. I've tried the same clutch setup as the EVO3STI but the engine became lag, then i tried to increase the clutch engagement (tighten more) and it increased a little but runtime was effected. I've even tried various clutch gap but still the same. Can anyone suggest me the needle setting or power setting for his engine. TQVM