No I'm driving with the original one. Do you what changes there are to them?
The overboost doesn't come into play. The car pulls fine, just not for the first 2-3 seconds when changing gears and giving it max throttle.
What do you mean you would never hammer the throttle? I'm not giving it full revs while changing gears actually quite the opposite since the revs are very slow to loose the revs when accelerating hard and changing gears swiftly.