I've seen posts around here recommending WitchHunter Performance, on the west coast (Washington state) and Paradise Racing on the east coast (Maryland) for injector cleaning and flow testing. I also stumbled across a midwestern shop (in Michigan) called Cruzin Performance. I haven't used them yet, but a quick look at their website shows that they take their business seriously and have put lot of detailed information about their methods and equipment on the website for prospective customers to see. I am interested too, because Michigan is right next door and I would expect one day shipping with most package services.

I'm getting ready to send in a couple of sets for cleaning. Anybody ever dealt with Cruzin Performance?