so is the COBB SRI worth getting by itself? Forget the AP, how do you guys (that have the SRI) feel about the SRI on yor cars? I am NOT buying the AP, so is the SRI worth it as a minor upgrade? If so, should I remove it everytime i go to the dealer for service or will that mess my car up (sorryguys, Im new to Turbo...Im from the old V8 school).