then wouldn't the O2 sensor sense the rich misture and re-direct the ECU to cut the fuel (by increasing the duty cycle of the injectors) during close-loop operation?Originally posted by flamefox850@Feb 8 2005, 23:35
it convert the signal from map sensor to ecu lah.
if map sensor read 0.8bar then u add +20% on safc then gives at around 0.96bar...then ecu order the injector to inject more fuel to support 0.96bar of what it sees from safc
normally the compensation rate from the O2 sensor is about 10%. Meaning the ECU is able to increase or decease the fuel feed by 10% from the MAP setting. If AFC adjusted it too high then the ECU will not be able to adjust the feed.Originally posted by flamefox850@Feb 15 2005, 00:17
hmm O2 sensor or ext temp sensor gives signal to ecu..when got rich signal..it told ecu to lean it...but it only TRIM it i think..trim then only little precentage only. so, if u adjust the safc into too rich..then O2 sensor cannot told the ecu to lean it too much until it going into STOICH mode. this is what i think...expert pls gives out comment
if the O2 can really2 help ecu to get stoich mode..then no need safc or other fuel management right ? B)
p/s: adj fuel regulator only adjust the fuel pressure..and fuel pressure increase as boost increase too...so if u adjust so high..u got rich mode in all rpm..be it at idle or high rpm or high boost
hahahaha this is what happen to me last time when using L2 injector on 882t engine :lol:Originally posted by TE27levin@Feb 15 2005, 17:03
but the stupid S-AFC will bring dis advantage to 2 bar MAP sensored car.
when ur turbo boost 0.8bar u increase SAFC to 20% richer then ecu will cut off the fuel supply because it reach the 1bar boost cut. LOL!!!