Ebay GT45 + 5.9 Magnum + E85 blow thru

coreyg said
I'm just going off of what Bryce at fitech told me, said the reference should be coming from the carb hat.

ok but think through as to why and it'll help you understand how the system is working.

Under boost there's nearly no difference. Its only at idle and cruise that there's a HUGE difference.