AEM X-Series Wideband UEGO AFR Sensor Controller Gauge s4b8.5 Delivering an even harder performance

Delivering an even harder performance edge to Audi's brilliant S3 is the new Cobra Sport performance exhaust with staggering 24% and 26% increases in power and torque respectively

Note: The 'To Standard Fitment' fits to O/E Cat Back only

We’ve driven them in every real-world situation you’re likely to encounter

the latest BMW M240i delivers a thrilling driving experience

The limitation of how much volume of fuel the high pressure pump can flow is dependent upon the volume displaced by the pressurizing cylinder inside the pump

AEM X-Series Wideband UEGO AFR Sensor Controller Gauge s4b8.5 Delivering an even harder performanceAEM X Series Wideband UEGO AFR Sensor Controller Gauge with X Digital Technology. Includes: X Series Wideband Controller Gauge, Bosch LSU 4. 9 Sensor, Wiring Harnesses, Black Bezel, Black AFR Lambda Faceplate & O2 Sensor Bung AEMs X Series Wideband UEGO Air Fuel Ratio Sensor Controller Gauges are built upon unique, patented 100% Digital technology (Patent 9,575,030) that makes them the fastest responding wideband air fuel ratio controllers in