Yeah he used the Diablo when I went to him which is the only gripe I have with the shop if you can call it that. But yeah a really easy way around that is to just show up with your tuner of choice and there you go.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.