Just had my 85 Euro motor, 110k, MOTOR VACED ($100). The throttle response is the first thing you notice, (it's intense)lightly touch the accelerator, it just wants to rocket off. Gas mileage improvement is the next thing. I will be driving from NY to Florida next week, and will note exact gas mileage.(MOTOR VAC MACHINE chemically cleans car intake manifold,injectors & combustion chamber safely) JIM