I just got Mark's chip and I have visited Bruno's site and I am just wondering can I do this without messing up the coputer. I just check with my mechanic(both of them) and they can't do it until weekend. That's an eternity to wait after hearing all the news surrounding this chip. How long will it take a novice and would you recommend me to just go ahead and do it? I have a 535IM- just tuned up and running great. What scare me the most at the end of Bruno's site he said if the car doesn't start you could have fried the computer-ouch!!!!!!!!!!!!!!