i thought of going to carb at one point cause my shit ran like assberries,but then i found Tweecer system,i already had a laptop and it was 500 bucks for it new in box,u hook it to the service port on back of the eec.and the wire runs to ur usb port,has 4 tunes settings on switch the u can load tunes to,u will need to do alittle reading and research,but i feel it was worth it,,,u can also tune on the fly and datalog while driving and record everything.im kinda dumb and i learned it,its not rocket sience,its very trick when people see it and are like wtf,u have a laptop in ur car..u can make the computer read displacement so if u go to a big motor,like me hopefully getting a 460 one day can still use efi with this,u can change EVERYTHING,,just a thought,