I got about 8 with the supplied pulley. After installing the 3.12" pulley I get 9-10. It seems to vary.

I start building boost at about 2500.

3000 = .5
3500 = 1
4000 = 2
4500 = 2.5
5000 = 3.5
5500 = 4.5
6000 = 6
6500 = 7.5
7000 = 8.5
7500 = 9-10

Those are aproximations, and with the smaller pulley. With the stock pulley I didn't start making boost until about 3-3.5K rpms. The boost only really starts to climb qhickly after about 4500 rpms. Hope that helps.

Simon new- '04 Dodge Dakota 4x4. V8, 5spd FOR SALE Black 98 SVT EO (#2119 of 6535)- SOLD! New project-'88 Ranger 302 swap.