A few random questions
A few random questions 1. If I run OLSD aka no maf no 02's what tables does the car refereance for fuel?
2. To do that do I need to tune my ve table?
3. Can I tune my ve table without 02's?
reason I ask, my 02's don't want to work so I was wondering if I can just go about this without them lol.
I have a wideband.
2. To do that do I need to tune my ve table?
3. Can I tune my ve table without 02's?
reason I ask, my 02's don't want to work so I was wondering if I can just go about this without them lol.
I have a wideband.
Originally Posted by markp03
1. If I run OLSD aka no maf no 02's what tables does the car refereance for fuel? VE table, PE table and OLFA table.
2. To do that do I need to tune my ve table? YES
3. Can I tune my ve table without 02's? You need a WBO2 sensor like an LC1, LM1, Wideband Commander, etc.
reason I ask, my 02's don't want to work so I was wondering if I can just go about this without them lol.
I have a wideband.
2. To do that do I need to tune my ve table? YES
3. Can I tune my ve table without 02's? You need a WBO2 sensor like an LC1, LM1, Wideband Commander, etc.
reason I ask, my 02's don't want to work so I was wondering if I can just go about this without them lol.
I have a wideband.
Ok I have lc1 wideband...how do I adjust my ve table using that?
I have efilive personal scan and tune.
this is a turbo car but I am only looking to tune it for crusing aka not in boost.
I have efilive personal scan and tune.
this is a turbo car but I am only looking to tune it for crusing aka not in boost.
TECH Resident
Joined: Aug 2003
Posts: 970
Likes: 4
From: England UK
Yes you can tune the VE tale with no O2's, the O2's modify your fuel trims in closed loop, if you want to run with no O2 you need to run in open loop all the time. Turn off your fuel trims, this can be done by setting the fuel trims to work above a temperature you will never reach. Do the same for Closed Loop ECT (a temperature you wont reach)
You should now be in open loop all the time.
Log Commanded AFR,
Log Wideband AFR
Log AFR Error between the above two, this will be the changes you need to make to the VE table.
You should now be in open loop all the time.
Log Commanded AFR,
Log Wideband AFR
Log AFR Error between the above two, this will be the changes you need to make to the VE table.
Originally Posted by RedWS6 00
Yes you can tune the VE tale with no O2's, the O2's modify your fuel trims in closed loop, if you want to run with no O2 you need to run in open loop all the time. Turn off your fuel trims, this can be done by setting the fuel trims to work above a temperature you will never reach. Do the same for Closed Loop ECT (a temperature you wont reach)
You should now be in open loop all the time.
Log Commanded AFR,
Log Wideband AFR
Log AFR Error between the above two, this will be the changes you need to make to the VE table.
You should now be in open loop all the time.
Log Commanded AFR,
Log Wideband AFR
Log AFR Error between the above two, this will be the changes you need to make to the VE table.
Originally Posted by SSpdDmon
EFI Live has an enable/disable button for fuel trims. Setting Closed Loop Temp Enable to 256*F for all cells will force open loop. Read the AutoVE Tuning Tutorial.pdf document from EFI Live (Help>Tutorials) for info on how to tune with a wideband. Simply put, Recorded_AFR/Commanded_AFR=Percentage_Correction_to_VE. If the wideband shows 9.0:1 for a given cell and you're commanding 10.0:1, then you are rich and need to lean that cell out. 9/10=90%, so multiply that cell in the VE by 90%. If it were lean (11:1 recorded, 10.0:1 commanded), 11/10=110% is what you would multiply that cell by. Make sense?
