Quote Originally Posted by Fivefingerdeathpunch View Post
That's the hope anyway, maybe.

But it's still possible to run lean if the maf calibration isn't just right, he might hit a certain maf hz where it could lean it out. But I doubt you'll gain more than 1 psi with the small pulley drop.
If his afr is good now, dropping .1" on the pulley size isn't going to change anything.