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Originally Posted by spyderturbo007
I think there is some confusion here.
You need to define this point within the SAFC-II. Most people set the low throttle point at 30% and the hi throttle point at 80%.
This means that when you are cruising around (TPS <30%) you are on the SAFC-II's lo throttle map. This map is set to maximize fuel efficiency by keeping the AFR around 14.7:1.
When you go WOT (or anything at a TPS >80%) the SAFC-II switches to the hi-thorttle map. The hi-throttle map was the one that was altered on the dyno. This map is designed for maximum power at a much richer AFR.....in my case 11.3:1.
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Ok i was wondering this also so lo-throttle setting is <30%, and hi-throttle setting is 80%>? so whats in between how do you adjust in between 30 and 80? i have wondered this?
Next no a narrow band with a good narow band sensor isnt going to help more or less give anywhere NEAR close to what accual AF ratio is. Wideband is the ONLY way. unless you get a narrow band conversion kit, but then its not worth it because widebands alsmost cheaper.