Definatley SCT. The Diablo doesnt work and the Customer Service is terrible. Id Suggest Mike at KemPerformance. He did my tune
I went with a Superchips and had Kauffmans in PA to tune the car.I went from 303rwhp to 478rwhp 490rwtq.But then again I have a turbo and added 12PSI.All they do is Mustangs and Lightnings.Good people and not to expensive.All day on Dyno and a Maf extender cost me $450.And I mean all day from 10am to 5pm.