Wideband UEGO Controllers can monitor Air/ Fuel ratios (AFR) in real time ... one unit. Additional features include a switch-controlled rev limiter, a two-step rev limiter ... and switch-controlled ignition retard that features up to 63 ... sensor controller accurately controls Air/Fuel ratios (AFR) during the tuning ... Subaru Impreza WRX M/T 30-1810 1993-98 Toyota Supra Twin Turbo 30-1100 4 Channel CDI ... for proof. AEM pioneered the Cold Air Intake for sport compacts, invented the ... Air Bypass Valve and V2 Induction System, created the ...