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change JB4 performance maps
We also offer cat-back conversions for customers who go with an Axleback first
Available in a ton of colors for the exact look that you want
The JB4 also features multiple maps based on this expanded engine criteria
Beginning after factory mid pipe
AWE Valve Motor Bracket for 2018 + Mustang GT with the Active Valve Performance Exhaust y-10 change JB4 performance mapsAWE Valve Motor Bracket for 2018 + Mustang GT with the Active Valve Performance Exhaust For drivers who have opted for the Active Valve Performance Exhaust from the factory, we have created a convenient, attractive, bolt on bracket to allow the factory issued valve actuators to remain equipped to keep your GTs ECU happy. You'll need this to ensure CEL free operation. Click Here for Installation Instructions