You can use the 8-injector set-up with a HKS AIC-3. You can do a search on ebay. They are around 260.00 dollars. I have been running one for like three years now. You can use high or low impedance injectors by moving a switch. I have been thinking on going with megasquirt, but just in injectors I have to spend from 350.00 to 400.00 dollars. It will depend on what type of power you want to make and what boost level you want to run.