Yes I've done quite a bit of work with MPE and they're a real class-act. Chris (the owner) is a very reasonable guy and very knowledgeable about Mustangs and other muscle cars. I originally went with them because they support Sniper tuning and I didn't want to pay anymore for another tuner. Chris was also a lot of help over the phone when I was installing/tuning my Kenne Bell 2000 miles away when I lived in TX. I would definitely recommend them and plan on returning to them to break 400 HP when I get back to Boston.