The never-ending quest for horsepower centers around air. Popular modifications allow an engine to pump more air by means of efficient induction components or longer valve-opening events. Other ...

What's the best way to supply fuel to a wet nitrous oxide system on a multi-port EFI engine? Q:I have a 1992 Olds Achieva with a highly modified W41 Quad 4. It has been fortified with forged Eagle ...

Nitrous oxide makes the wheels go round … and how! If you followed along in our first installment (January '84) on the relative merits of power augmentation with nitrous oxide injection, you already ...

The 13th episode of Engine Masters, presented by AMSOIL, is an unlucky one for a poor little 305ci Chevy small-block. It was the victim of our test of how much nitrous oxide power boost can be ...