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 ...

Anyone who has gone to school to learn how to repair engines of all types, such as myself, will have learned the fundamentals of how they work. It's crucial for troubleshooting and diagnosing engine ...

Port fuel injection (PFI) was a major milestone in the early '80s. The integration of PFI rapidly changed the way fuel was delivered by increasing fuel economy and improving engine performance. Even ...

Most new petrol cars you see today are equipped with fuel injection systems or injector motors. These have almost wholly supplanted older carburetor motors. They are more reliable, effective, and ...

Direct-port electronic fuel-injection may be the ultimate fuel metering system, but unfortunately it is also by far the most expensive. Presently available systems are based on factory electronic fuel ...