Head Porting: DIY or Not? The horsepower game is all about getting as much air into the cylinder as possible, adding the appropriate amount of fuel and lighting it off. […] Jim Allen January 20, 2017 Diesel Tech / How-To
![](https://ad.ipredictive.com/d/track/event?upid=111299&url="https://www.dieselworldmag.com"&cache_buster=1730815246&ps=1)