This has been mentioned 1000 times, but didn't pay enough attention to it til I decided I wanted to do it. I want to go with a 2.93 pulley & diablo predator. Is this chip self programmable with my mods ( magnaflow catback, steeda CAI ) plus the pulley, of course or do I need to have the car professionally tuned at a local shop. I'm in Jersey, so I'm fairly close to JDM Engineering or Crazy Horse.