I swaped my 1j into my Mk3. I upgraded my twins to an MPT70 and am experiencing white smoke that smells like only on decel only? I'm familiar with the general rules of the colors of smoke being: white=coolant, blue/gray=oil, black=fuel. My mechanic thinks the piston oil rings but I did a compression test and every thing was even at 130 after three rotations. I did a vacuum test and the gauge is holding a solid 23 which means a good motor. Any suggestions?