Car mods that are illegal in many states include straight piping your exhaust, using muffler cutouts or bypass valves, or ...

Straight pipes result in seriously loud exhaust noises, but in the right situations, they could reap benefits when it comes ...

Does Illinois allow you to alter or modify your car exhaust to make it louder? Here’s what to know. Photo by Khunkorn Laowisit: If you drive often around the metro-east or across the river into St.

We've all seen exhaust cutouts that open up the exhaust system by essentially bypassing the mufflers, creating an open-header-like exhaust note that scares old women and makes children cry (and we ...

Q: Seems to me, it’s far more common to hear a motorcycle (and sometimes cars or trucks) from what could be a mile away, than to see one. I don’t think any agency uses decibel meters anymore. I ...