TT Paul Posted September 6, 2015 Share Posted September 6, 2015 Spec Hks twins Aem ems Auto 1000cc injetors Fault Afr Sitting at 16.1 to 17 on warm idle Cruising say 80mph. afr at 10.9 to 11 Mpg is fairly bad Im thinking o2 sensor faulty but thought i'd ask first. Quote Link to comment Share on other sites More sharing options...
mellonman Posted September 6, 2015 Share Posted September 6, 2015 (edited) Depends on map really mate but 16 - 17 is too lean , cruising at 80 should still be in closed loop being around 14.7 , 11S should only be see at WOT , That being said cruising is not the correct term as throttle posision ,boost and rpm are the factors for closed loop stuff. Cruising at 80 could be in achived with no boost at all so seeing 11S would propably be in the realms of bore wash. Depending on how the ecu is set with a bad o2 should be richer at idle but it depends on if its actually been mapped correctly for a faulty o2? Edited September 6, 2015 by mellonman (see edit history) Quote Link to comment Share on other sites More sharing options...
TT Paul Posted September 6, 2015 Author Share Posted September 6, 2015 See what your saying if map not able to cope with faulty o2. Got another one so will try that 1st then maybe the mapper. Quote Link to comment Share on other sites More sharing options...
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