Guidance on closed loop afr Change and tuning clarification
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Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
Transmission: 700r4
Axle/Gears: 10 Bolt
Guidance on closed loop afr Change and tuning clarification
So started tuning closed loop and got the ve tables I had my hiccups here and there but got to where I want them but wasn't quite happy with it
So last week decided to go open loop and tune ve that way
Had to trim more fuel out but got it running stronger part throttle and wot seems more snappier drove mid day and late night and afr doesn't vary much at all really like how it feels engine is happiest with 13-13.5 afr for cruise and 12.5 for wot
So now I switch back to run closed loop and it's not as crisp as it was with open loop and have some slightly lean spots 15-16ish between 2-3k rpm only at part throttle and wot gets super rich 9.5-10ish
I tried to adjust O2 tables to see if I can get 02 to swing around 13 ish
1-guidance on commanding afr in closed loop to slightly richer
2-I click flag to lock blm at 128 in pe mode is that right to do ? Cause in open loop my afr is right on but closed loop it's super rich at certain spots and when in pe mode it's in a way in open loop and afr should be the same as into openloop will play with pe afr and see what happens pro zero it out and make it same % a cross the board like -3 %
3-my assumption is that everything is base ve table everything works off that so slight perfomance lose and issues is it due to command afr 14.7 when in closed loop
When running my ve tables in open loop I had dfco, efr, divert air, ccp, pe all disabled
7730 ecm $8d
I know I'm doing something wrong and I'm not that knowledgable when it come to running and get confused easy posted my ve tables
Her 3 tables I used to get afr to swing richer
Upper ve table
Lower ve table
So last week decided to go open loop and tune ve that way
Had to trim more fuel out but got it running stronger part throttle and wot seems more snappier drove mid day and late night and afr doesn't vary much at all really like how it feels engine is happiest with 13-13.5 afr for cruise and 12.5 for wot
So now I switch back to run closed loop and it's not as crisp as it was with open loop and have some slightly lean spots 15-16ish between 2-3k rpm only at part throttle and wot gets super rich 9.5-10ish
I tried to adjust O2 tables to see if I can get 02 to swing around 13 ish
1-guidance on commanding afr in closed loop to slightly richer
2-I click flag to lock blm at 128 in pe mode is that right to do ? Cause in open loop my afr is right on but closed loop it's super rich at certain spots and when in pe mode it's in a way in open loop and afr should be the same as into openloop will play with pe afr and see what happens pro zero it out and make it same % a cross the board like -3 %
3-my assumption is that everything is base ve table everything works off that so slight perfomance lose and issues is it due to command afr 14.7 when in closed loop
When running my ve tables in open loop I had dfco, efr, divert air, ccp, pe all disabled
7730 ecm $8d
I know I'm doing something wrong and I'm not that knowledgable when it come to running and get confused easy posted my ve tables
Her 3 tables I used to get afr to swing richer
Upper ve table
Lower ve table
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