Making Real Power With a 1.8 t Big Port Head
Deciding to swap in a 1.8 t big port head usually happens right around the time you realize your stock turbo just isn't cutting it anymore. If you're deep into the world of Audi and Volkswagen 20V engines, you've probably heard the legends of the AEB or AGU head castings. These are the "big port" versions that came on the earlier cars, and they've become something of a holy grail for anyone trying to push their 1.8T past the 400-horsepower mark. It's a classic modification, but there's a bit of nuance to it that goes beyond just "bigger is better." ...