After a handful of naturally aspirated mods, we just couldn't wait any longer before subjecting Mini Mouse (our 4.8L LR4 test engine) to some positive pressure. Mini Mouse has been built to ...

Diesel enthusiasts looking to upgrade the turbocharger on their 2017 through 2019 Duramax turbo-diesel L5P V8 engine can now turn to Wehrli Custom Fabrication for its latest single turbo upgrade kit.

In today's Ford world, dominated by high-powered Shelby GT500s and force-fed 5.0L Mustang GTs, 400 horsepower seems to be just a moderate horsepower level. Without being left in the dust, oftentimes, ...

You're sitting at the ready line. A bead of sweat runs down your face as you pull the shifter into low gear. It's hot. You're layered in fireproof material. A helmet limits your peripheral vision, but ...

I installed a $10,000 single turbo kit on my Mk4 Supra, and the transformation shocked even me. The car feels completely different the moment the boost hits. This build pushed the engine harder than ...

From day one, the idea behind Modern Mouse was to subject the 5.3L LS to all manner of testing, including everything from bolts-ons to blowers. Nitrous, a stroker upgrade, and even old-school ...