dive_popo Posted September 12, 2011 Share Posted September 12, 2011 Hi guys, I have juste mounted my FMIC and my AFR is lower than before, before I had 14,6 when iddiling and now it's 13,6 when I push hard it is around 12,2 any advice ? Config : Mines ecu, jspec inj, euro fuel pump, IK22, HKS ti, decat, AVCR Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 12, 2011 Author Share Posted September 12, 2011 a SAFC will be the solution ? Quote Link to comment Share on other sites More sharing options...
mellonman Posted September 12, 2011 Share Posted September 12, 2011 fitting the front mount should not make it richer, maybe reset the ecu and see what you get, 13.6 is normal for a cold engine, also if there was a difference the fuel trims will sort it out. make sure its warm when your checking the afrs if still rich check o2 sensor. pushing hard at 12.2 is okay little lean Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 12, 2011 Author Share Posted September 12, 2011 my AFR was good few days ago on standard SMIC (14,5 iddilling when hot)... so I guess the o2 sensor is ok now when cold it is around 11,5 -12 and after few minutes it is 13,5 - 13,6 any advice on resesting the ECU ? 'cause when installing the FMIC the battery was pulled off for about 2 or 3 days... Quote Link to comment Share on other sites More sharing options...
mellonman Posted September 12, 2011 Share Posted September 12, 2011 when installing the FMIC the battery was pulled off for about 2 or 3 days... looks like the fuel trims have cleared with the batt off. the short team fuel trims would put the afrs back correct within a couple of seconds i would say drive about 30 miles and then see how it is, if its still the same then check the o2 voltages Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 12, 2011 Author Share Posted September 12, 2011 I'm currently at work now and I took the supe, so I've done about 20 miles and the AFR is still at 13,5... will check the voltages later thanks for your help Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 12, 2011 Author Share Posted September 12, 2011 Just found few minutes to go and see my wide-band, so the voltages : from 0.10 to 0.80 (increase and decrease) Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 12, 2011 Share Posted September 12, 2011 What make of wide-band are you using? it may be that it requires recalibrating, there is no reason that a FMIC will suddenly make your fueling richer, if recalibrating doesn't bring things back, then i would start looking at the std narrow-band sensor. Quote Link to comment Share on other sites More sharing options...
mellonman Posted September 12, 2011 Share Posted September 12, 2011 Just found few minutes to go and see my wide-band, so the voltages : from 0.10 to 0.80 (increase and decrease) is that your wide band voltages or narrow band? i thought wide stay solid voltage 1-5v, narrow jumps between the voltages? if that is the voltages that the stock o2 is putting out it needs cleaning or replacing. see here for testing http://www.mkivsupra.net/vbb/showthread.php?35940-Narrowband-O2-Sensor&highlight=lambda%20sensor Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 12, 2011 Author Share Posted September 12, 2011 thanks guys will check it again and clean it after work Quote Link to comment Share on other sites More sharing options...
dive_popo Posted September 13, 2011 Author Share Posted September 13, 2011 Eureka ! Yesterday I gave to the o2 sensor a quick clean and today morning everything is perfect ! Thanks again guys Quote Link to comment Share on other sites More sharing options...
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