Its called Euromotors.
Location: Copper Hill Drive in Prescott valley

Pros: Clean shop, Owner will talk to you like a human, Has a Ton of experience with BMW's, MB's, Jag's, and Ferrari's. Will lend tools. Does good work at a price ($100 charge to hook up the computer reader and test compression)

Cons: Only open during the week from 8-6, no weekends.