right, i had to rip the valver out and put the original cinqe engine back in yesterday afternoon as the other half really needs the car this week. problem is when you rev it past 4500 the rev counter goes nuts, bouncing between 4500 and 8000 rpm. the car doesn't miss a beat or hesitate at all. soon as you back off the management light comes on for a few seconds. this is a constant problem. any ideas anyone? thanks.