ECUs!!!!!!!!!!!

[SwitchBacks]

what is the best upgrade i can do in reguards of ecu retune. my sr is fully built i just need to know a good set up. AFS? what size injectors? ECU. jim wolf? does any one have or know about the little computers that hook up to your ecu to control everything electronically. where can i find them. thanks

[180fan]

by little computer, you mean stuff like the fc commander for the apexi power fc units?

you have no details listed on your setup nor any goals. fully built in this case doesn't mean much. the size of your turbo/amount of boost will dictate what size injectors you need and if you need to change your mafs, and so on. details.