so yours isnt ported then, just delipped and polished? i removed the lip on my standard one, could really tell the difference to be fair, but thats not to say it didnt do anything as your smoothing the air flow. but i had a spare that i sent as part of a group buy on here, where they stripped the throttle body down and machined it out (from 60mm to 64mm) and modfied the spindle to fit a bigger butterfly to suit. now that you could tell the difference. like ive said its now forsale as ive no longer got the car.