Any high-performance engine needs to be cared for and properly monitored. Sometimes, factory gauges can be inaccurate or simply not specific enough for a modified car, so take a look at these ...

According to tuners that we’ve spoken to, even engines with fairly big cams will idle at 13.0:1 air/fuel ratio and might be able to handle as lean as 14:1 air/fuel ratio at part-throttle. Much of this ...

It used to be that tuning a hot street engine or race motor was one of those black arts that only those carburetor and ignition wizards seem to understand. When (and why) an engine needed more or less ...