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- HSV VS Senator, VX Calais II L67
I'd imagine that Al Gibb knows how it's done.
Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Many of those aftermarket throttlebodies have vac ports for dizzy advance and map sensors. Can't seeing that being an issue unless it was fitted to ported vac tbh. Either way at wot it should read atmospheric pressure anyway especially since those 4 barrel throttlebodies flow so well. Are you sure it's getting 100% throttle using the accelerator pedal?Theres no cai its just a filter on the 4 barel tb, the tuner tryed it in one of the runners and then one of the holes in the bottom of the throttle body