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Working on a '90 Integra 1.8 in a road racer used for Lemons and Chump Car. Have a header and glass pack, cold air intake and clean up the ports (matched intake and exhaust, profiled guides, blended bowls, 3 angle valve job, back cut intakes). All to improve air flow. Question becomes, does this system operate in closed loop at wide open throttle? If so what percentage will the system self adjust based on feed back from the O2 sensor? I only have a narrow band A/F meter, I'll check that in practice, but can't in the races. Will it be OK? Thanks for the help oldsmitty:confused
 
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