I just got my 03 Cobra and the dude that had it before me had it tuned for 93 octane. Well getting the fuel and mixing it is a pain. So I might be looking to tune it down a little. 1st question-- How much horsepower can you potentially lose doing this? The guy had it dynoed right at 494hp. 2nd question-- Who in Az can do something like this? I haved tried to get in contact with SVC but have had no luck. A few years back I bought a blower from them so I figured I would give them a shot. Does anybody know any good shops here in mesa? Thanks in advance for your help.