As a longtime soapbox-shouter of tunnel-ram greatness, David Freiburger is constantly peppered with questions about running a single four-barrel carb versus dual quads on the tunnel ram. And finally, ...

Street-car turbo people, this one's for you. We all know that adding any sort of restrictor-like a muffler-is going to hurt power on a turbo motor. We also know that sometimes it just makes ...

There's no power-adder with more myth and legend than nitrous. It's just about the cheapest horsepower you can buy, but it brings some painful consequences quickly with it if you're not careful. In ...

David Freiburger and Steve Dulcich are no strangers to junkyard engines and bizarre modifications on Roadkill Garage. On Engine Masters, they take that to the next level, adding crazy upgrades to ...

On a previous episode of Engine Masters, we watched David Freiburger (of Roadkill fame) and his crew run a comparison test between differently sized headers of the same long-tube variety. This time, ...

As masters of the Mopar engine, David Freiburger and Steve Dulcich know how to exact the most horsepower and torque from stock Mopar engines. Here's what the've done to some pretty basic Mopars on ...

The FinalsThe Engine Masters Challenge competition has gained the attention of our readers, the automotive aftermarket, and many of racing's best minds. For 2003, our goal was to find the ...

On episode 4 of Engine Masters, Roadkill host David Freiburger and friends beat-up some Hooker headers mounted on a 400-cubic inch V8 to see if the restricted air flow would hinder performance. What ...

Come July, a group of UCD students will realise a dream. They will travel to Birmingham, where they will pit a racing car they have designed and built themselves against cars built by students in ...