The Big Gun TFI Power Box is a plug-and-play fuel controller designed to compensate for the increased airflow of an aftermarket exhaust. Pre-set with a middle-of-the-road tune — approximately 80% of customers don't need to adjust further.

• Plug-in technology — installs in minutes
• Plugs directly inline with stock injector harness
• Increases horsepower and throttle response
• Pre-set tune compensates for aftermarket exhaust

Note: Not ARB/CARB compliant — cannot be sold in California.