Quote:
Originally Posted by Optimiser
My car is at my shop all this week to have the 928 impeller and bearings/seals/ upgrade, have a better intake fabricated so as not to have to use the little flat filter, service, Uprev ARC update and retune on the dyno.  |
Myself and others have done some testing with using a different filter and nothing is better than the one provided with the kit. But, it will be hard to say if you picked anything up or lost anything if you go with both impeller and intake mods at the same time as that impeller, assuming you will re-pulley and spin at 60K+, is going to pick up some good power.