Rob and his team were fantastic! My 10' 7AT fully loaded Roadster was running with some K&N short rams, Berk HFCs, and Akrapovic CB. I was planning to drive to San Francisco from Vancouver for a road trip, and chanced upon a thread mentioning the Z Car Garage before I left. I called up Rob, and setup an appointment for a light weight pulley install, and an UpRev tune.
Everything said and done, Rob and his team have found themselves a Canadian fan! Once I NEED (it'll happen eventually) to go FI, I'll be back!
Increase from baseline wasn't far, as it seems I have a pretty "smart" ECU, but man did the drivability and response feel different...
Check Rob and his team out if you're in the Bay area!