Originally Posted by amg-jerry
I would say up to 50whp / 50wtrq with a tune, pulley, and the airboxes.
Our cars vary so much on baseline dynos that it's hard to guess. Some guys are pulling 275whp and others are hitting up to 295whp.
I can assure you that your butt dyno will be reading much higher than 50.
With just the new air intake mod & new SC pulley Code three has developed, he Dynoed 335-8. This pulley installs in 20 minutes.