I have been thinking of picking up a race header soon but wanting to know whats an average afr for intake, race header, and exhaust(70mm). Or what's a safe range to be in?

I've been trying to collect some data on others with similar mods but no one has responded. THis is the only thing I have found so far http://www.8thcivic.com/forums/bolt-...no-my-car.html Isn't that a little too lean?