Non-computer controlled vehicles hove distributors that allow you to mechanically alter the amount of ignition-timing advance and the rpm at which the ignition advances. The parts you will be changing ...

Modern cars wouldn’t be what they are today without Electronic Control Units (ECUs) quietly running the show. Think of them ...

The Advance CurveAll engines require an ignition curve based both on the requirements of engine rpm and cylinder filling (volumetric efficiency). This means that at 3,000 rpm with the throttle open ...

With the rise of modern engines and hybrid technology, ECU tuning continues to evolve. Software is becoming more advanced, ...

Some very valuable tuning tools are greatly misunderstood. Take the lowly vacuum advance canister. Many enthusiasts dismiss this device as superfluous—or worse—only for emission-controlled engines.

So you're wondering what's the big deal with "digital," are you? Unless you've been hiding under a rock for the past decade, almost everything you hear about is new, improved, and digital. The "old ...

Q: A question from your August 2007 issue got me thinking. A guy with a Kia Sportage asked where the spark plugs and spark plug wires on this car were, and was told that this car did not have a ...

There are several instances where knowing the location of cylinder number 1 matters, especially for DIY enthusiasts. It's not just trivia, but crucial when diagnosing engine misfires, replacing spark ...