Quote:
Originally Posted by cmac2012
One thing I wonder about is the little relay hub where the lines converge. Tonight, to take off the manifold banjo bolt I took the hub/junction off the firewall as I couldn't see where that hose hooked in. I noticed an electric line coming off of it. I'm curious just what goes on in that little hub thingy.
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that's overboost protection valve.
if it gets continuity through the pressure sensor on the intake manifold it then vents this line to atmosphere therefore limiting fuel by not sending pressure to ALDA