is it good to have the rpm's sorta in the high or medium range at idle or shoudl it be like low and medium. my friend brother was talking to my friend about increase his rpm's at idle for faster acceleration. would changing the lsn make this happen? if i am worng on this can you tell me plz how i could.

what would tuning the clutch do? cuz on my onraod car if the clutch goes or w/e i jsut get a new one and pop it on.