The stock motor can handle 15psi with an upgraded head gasket and supporting fuel. The wide body made 357whp at 15psi on a Holset HX35.
Wide Open Throttle Technologies (WOT-Tech)
The 1986 325es Delphin project LINK
Project 1988 325i sedan "Pinky" LINK
Last edited by ForcedFirebird; 01-25-2013 at 04:37 PM.