you would be able to do more with a SAFC than gettin ur ecu chipped.. it has difffernt files u can use (after it is set), i had two files on mine one for street use and one for track use.. that bc i wanted all the gas milage i could get lol .. dunno bro just a thought, although on my present car i have a ecu programmed especially for my setup
NOOO. Do NOT use an SAFC on a turbo'd car unless you ABSOLUTELY have to. an SAFC is considered a "piggyback" which does NOT actually alter the map inside the ECU. Generally, a piggyback system will alter signals sent to your ecu from various sensors (o2 sensor, etc) so that the ecu will read a different value and lean/richen the setup accordingly. VERY VERY limited control, and is also risky as hell if you don't know what youre doing.
do it right the first time: obd1 ecu chipped and socketed, and get someone to tune specifically for your setup. a map specifically for your setup will yield more power, and greater efficiency (provided its done right) than a piggyback setup. piggybacks are pretty much garbage when you have the option to tune with CROME, ECtune, etc.