I was wondering if anyone can tell me if there is an easy way to tell if the smoke is coming from bad valve seals or if it is coming from the piston rings. What happens is when im driving normally and let the motor rev up to 5500rpm slowly a cloud of smoke starts coming out real bad from the exhaust. It only does this when I do slowly lay into the gas and get it that rpm. If im running on boost or normal driving everything is fine. Can anyone tell me what might be going on and how to check? I did a leak down and compression test and the numbers were all ok. I have a 96 civic ex with wiesco 9.0:1 pistons, scat rods, a t3 super 60 turbo and a stock head.