Chris72, thanks for the interesting links. It looks like these ECM add-ons wire in between the existing ECM and the injectors. Snake oil? Magic black box? I'd love to talk to anyone who has actually installed one of these things.
Corona


'98 TJ, 4 cyl., auto
31" AT KO's on rockcrawlers,
custom bumpers, Hellas
2" Teraflex lift, no top,
no doors, no problem.