thanks mike. i just got my vr6 top overhauled. Piston rings, cam bearings, conrod bearings, both timing chains, timng tensioners, all engine gaskets , new complete clutch kit, waterpump, 3 engine mountings ALL new! Thats why i cannot diagnose why there is a flat spot at 2000-3000 rpm rev. AS mentioned, after 3000 - 5500 rpm, the car shoots off like a bullet.