Yes, Wisconsin law requires all motor vehicles, including motorcycles, to be "equipped with an adequate muffler in constant ...

A Borla Catback exhaust paired with a Nuespeed carb legal intake. The factory catalytic converters remain in place, and the new exhaust system produces no drone. I'm really enjoying the improved sound ...

After months of work rebuilding Adam LZ’s wrecked Porsche 911 GT3, the car is finally ready, almost. With limp mode fixed, it’s time to see if Champion Porsche approves of the repair.