Car Volvo 740 Turbo 2.9L
Big turbo
H-beams
Race pistons
Race crankshaft
Big valves
Ported
Race camshaft 12 mm lift
Issue.
Having problems using lambda correction.
It seams if the car is running lean it will not correct/regulate only if running rich it starts to correct.
If we set it to regulate 100% rich and lean it seams to do some kind of correction.
Another thing is the wideband is showing data the same time car is started so warm time (120) has no effect.
Ecu has been upgraded from 1.1.75 - 1.1.96 - 1.1.95
Log file her http://www.vems.hu/files/MembersPage/PeterJensen/volvo_740/v3.3_n002480-2012.04.15-15.39.28.vemslog
- Can you upgrade to http://cell.dyndns.ws/f/v3_firmware_1.1.99.zip
- it supports 2 wideband sensors (default is still 1 wideband). The ego correction condition was reworked (disables ego if nernst or Ri is off-target)
- it's hard to tell why ego was off at certain points with the captured 1.1.96 log, But note that more than +5..15% rich or more than 30% lean should never be needed. (tune to appr 2..3% richer and you'll have around egocorr=97..99 most of the time