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    idle problem.....s15 noob here,help!

    ok i have a s15 spec-s and i put a turbo engine in it about a month ago, a few days ago the idle went bit wierd on me and now with clutch out its idling at 1500. and with the clutch in it rises to 2200 and if left for say 30seconds with clutch in it drops and rises from 1700 to 2400. just...