so, i changed my n75 valve and when i took my old one off it was a 'C' and the one i put on was a 'E'.
thing is it works really smoothly but it doesnt feel as quick

i know the old one was faulty as it was overboosting so should this be ok now or is it the wrong valve thats gone back in???
i will try to put a pic on here of the rolling road pre re-map so you can see the peak befor...