I read about the "full circle" fuel rail that Bruce produced for the E55. I've noticed my front plugs run a bit leaner then the rears. Or the rears are richer than the fronts. Don't keep the fuel rail a secret when it's done. As far as the tune, I log during my races and if it's lean I have to drop out. No way can I see race conditions on the dyno or street. It makes it a bit of a scary proposition. Thank goodness for my Dashdaq and Zietronix.

Les