Originally Posted by stockhatch

Meh, you could run the 550s on a JDM ecu. It's not ideal, but it will work. You could also go cheap and get a map ecu 2 or 3 and tweak the fuel without the timing problems associated with a SAFC. Or you can go all out and get a standalone as mentioned above and pay for a good tune. There are a few different routes, and they vary widely in cost. The question, as always with hot rods, is how fast do you want to spend?