I just got this 2012 CTS-V A6 Sedan and have been talking to John at Dedicated about upgrades and had a few questions that I wanted to relay though everyone. First of all this car has QTP cutouts, Airaid Intake, ZL1 lid, and a trunk mount icebox with 3/4" line running all the way up to the lid. My first question is do I NEED to do injectors BEFORE I swap the upper pulley? John recommended that I did and I mean no disrespect to him or his advice, but in the mod/dyno number list sticky I see that there are a few running stock injectors with smaller uppers successfully. I definitely will upgrade injectors eventually, but they are just so damn expensive and everything else is reasonably priced enough. This question could also possibly be irrelevant since with the mods I bought the car with it might have upgraded injectors I just can't see them. Next question is are the injectors easy to pull to check them? This is my first supercharged car (previously all carburated nitrous) so I am not really sure of myself tearing into this thing quite yet.. I probably wont do a whole lot other then pulley and eventually injectors since DD and all. Thanks in advance!!