Not sure how happy I am with it really... Bit to laggy for my liking but does sound very cool! Once spooled up it goes off it's head but not good for off the lights or when you are in third and give it a punch it not responsive, you have to down shift. Think it comes in at about 3,500-4000rpm and full boost at 5000rpm.
I am already thinking about taking it off and swapping it for a R33 S2 turbo. I rekon it would go much better on an RB25!
Hmmmmm, lesson learnt I think. But will be much easier to do the swap the second time around. Might have to take you up on that offer Jaff!