zzp doesn't lock their pcms. if you have an opportunity, I would get a maf adjustment done because it is likely that your fuel trims will run rich with the zzp adjustment. zzp and intense modular pulleys are interchangeable, and for that reason, most people use the zzp hub or intense hub. those are the most common pulleys out there. 3800 performance has been declining in popularity for quite some time.