VR6 Tuning Guide
These are scans from the April 2007 Eurotuner. They talk
about upgrades for the VR6. Its hard to get back issues, they do not sell them
PLEASE this is not a post to beat up on ET, or fight about which parts are "better" or "cheaper"... this is just an info post for the new guys...
But if you want further reading, here you go.