I have a 91 CRX Si and I would like to change my ecu to a more aggresive one. i know i can use an 89 teg ecu but i heard it will run rich. could this be corrected with a fuel pressure regulator and an air/fuel guage? what other options are there. i dont want a chip cause i cant install it myself. are there any SOHC ecus that would give me an increase in power? thanks-david