Outside of motocross, Hunter Lawrence finds passion in high-revving sports cars. Discover what’s under his GT3 RS—and why stock just wasn’t enough.
Unlock +17 WHP on your Porsche 718 GT4 RS with Fi EXHAUST. Dyno-tested performance gains without ECU tuning or CEL. Experience pure motorsport sound and proven power.
Having trouble with your Fi EXHAUST valve system? Follow our complete troubleshooting guide — from checking the remote and control box to inspecting the solenoid and vacuum tube — to quickly identify the issue.
