Builds, tuning guides, and tech notes for the VW 8-valve.

Archive of things I, and the community of these great engines have learned, all in one place.

ABA 8-valve engine with individual throttle bodies, a blue fuel rail, and red ignition wires

Photo from when my car ran ITB’s. More on that later…

Everything ABA

The 2.0-liter 8-valve from the Mk3 Golf and Jetta. Turbo builds, standalone engine management, swaps into older chassis, and the parts and settings that actually worked.

Latest build logs

No build logs posted yet. New write-ups will appear here as soon as they’re published.

Guides by system