ok so i recently bought a 2000 ss with a T1 cam already in it... i went and had it tuned a couple weeks ago at conley and when they were strapping it down i was leaking some oil from (what looked like) my front seal. unless the oil is leaking while i drive i havent' noticed ANY leaking since then. however, whenever i'm driving and i put it in neutral or just keep it in gear and have the clutch it... it revs up to 2 grand and i'm not even pressing the gas... and it stays that way until i slow to about 20 mph and then it drops back down to normal. it doesn't do this all the time though... just every once in a while. i never noticed it before i got it tuned though. i would think it's a vaccum leak... but any suggestions to how i could figure out where the leak is coming from OR... a way to tell if it is leaking from my front seal?? plus my gas milege before tuning was usually about 280 miles on a tank and now i've gone less than 200 and have about 1/8 of a tank left and i have been tryign to baby it. could that be cause of the leak or do i have gremlins stealing my gas?