The Air Fuel Ratio (AFR) is controlled by how much fuel is delivered to the cylinder for combustion. There are many factors and many sensors that come into play when trying to determine how much ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...

Tuning is a subject too complex to be dealt with exhaustively in a short wiki page; the purpose of this page is to give you some pointers. This tutorial assumes that you will be using the Speed ...

Forced induction is getting more and more popular with automakers. Turbocharging is an effective way to add performance to your vehicle, even if it didn’t come equipped with it from the factory. And ...

Tuning a stock, EEC-IV engine control module on a Fox Mustang is like trying to stream Netflix on a dial-up connection — outdated, inflexible, and likely to leave you screaming into the void. For me, ...

Fuel delivery technology has come a long way in the past few decades. Yesterday's carburetors can't hold a candle to modern EFI systems in terms of driveability, economy and reliability. Changing ...

Back in the day, if you were setting up a car with non-stock carburetors or a modified fuel injection system and needed to dial it in, you used old-school methods. If it made your eyes water, it was ...

An engine relies on two things to run: spark and fuel. Sure, there are a million other things to consider when speaking of engine operation and power, but regardless of the type, size, or brand of ...

In the past, trying to convert your older truck from standard carburetion to modern fuel injection was not only difficult, it was costly as well. Assuming you could install all the parts correctly, ...

This article applies to the Chevrolet Camaro and Pontiac Firebird (1990-2002). HP Tuner software is an incredibly powerful tuning software suite that's perfect for someone looking to get a little more ...

Earlier this year, our good friends at FAST (Fuel Air Spark Technology) released the second rendition of their industry-renowned XFI Electronic Fuel Injection system, packed with several refined ...