Since the dawn of diesel performance, aftermarket tuners have made it clear that generating horsepower is predicated on the ability to remove spent exhaust gases quickly and efficiently. As a diesel's ...

One of the most common purchases we make as Jeepers is an after-cat exhaust kit. Whether our old one rusted off, we are just looking for some more power, or we just want the Jeep to sound better, an ...

The rumble sounds great in the driveway, but the real story is complicated.

The current-generation GMC Sierra AT4 – whether in pre-refresh guise or refreshed form for the 2022 model year – offers impressive off-roading capabilities thanks to a list of rough-stuff extras and ...

The GMC Sierra AT4X made its big debut with the introduction of the fully refreshed 2022 GMC Sierra 1500, sliding in above the GMC Sierra AT4 as an even-more capable off-road trim level. Now, we’re ...

It's been a few weeks since I installed the Borla cat-back exhaust on my 1991 brg Miata (1.6 liter) and the tone is ...