AFR+ Fuel Controller & Blackout Titan-XL-Series Slip On Exhaust Billet for Polaris RZR XP 900 2011-2014 Kit Includes: 1 HMF Titan-XL-Series Slip On Exhaust Blackout, 1 Dobeck AFR+ Gen 4 EFI Fuel Controller HMF Titan-XL-Series Slip On Exhaust Blackout Color: Blackout Shape: Round Mount: Side End Cap: Billet Dobeck AFR+ Gen 4 EFI Fuel Controller The Gen 4 Optimizer is the AFR+ Fuel Controller that combines an EFI controller with a wideband O2 sensor and AFR gauge to provide a user instant fuel trimming ability and feedback about their vehicle's state of tune. The AFR gauge allows you to know exactly how well your tune-up is performing at all times.

AFR+ Fuel Controller & Blackout Titan-XL-Series Slip On Exhaust Billet for Polaris RZR XP 900 2011-2014 Kit Includes: 1 HMF Titan-XL-Series Slip On Exhaust Blackout, 1 Dobeck AFR+ Gen 4 EFI Fuel Controller HMF Titan-XL-Series Slip On Exhaust Blackout Color: Blackout Shape: Round Mount: Side End Cap: Billet Dobeck AFR+ Gen 4 EFI Fuel Controller The Gen 4 Optimizer is the AFR+ Fuel Controller that combines an EFI controller with a wideband O2 sensor and AFR gauge to provide a user instant fue