i have just had my cossie rebuilt about 750 miles ago, and had it rolling roaded on wednesday. it has 803,s ahmed chip, dark greens and -31 actuator etc, and now when you rev it hard under load or decelerate in gear after giving iot a bit of boost, it seems to throw a bit of white smoke out the back. not loads, but it looks like a smokey old sierra and i am a bit worried. please shed some light n the situation for me. (everything was brand new on the engine and on the upgrade, and it was rolling roaded by a cossie speciaist)