Hondata

long story short: i cant get it back to operating in closed loop properly - that is, at 14.7:1

but looking at this log - is it in closed loop?

here is the cali

it is b20vtec 12.5:1 with toda C's

If you are using a wideband try using a other wideband input source other than D14.

tinkerbell wrote:long story short: i cant get it back to operating in closed loop properly - that is, at 14.7:1

but looking at this log - is it in closed loop?

Ur wideband target voltage is set at 2.36 volt while your voltage/lambda conversion table is set at 2.31v for AFR of 14.7.

Therefore in close loop operation, the ecu will be trying to achieve AFR of 14.3

OK, so ELD D14 is not available as it is not wired up on my Hondata modified ECU.

is B6 0-5V full range input?

Will_B18C wrote:

tinkerbell wrote:long story short: i cant get it back to operating in closed loop properly - that is, at 14.7:1

but looking at this log - is it in closed loop?

Ur wideband target voltage is set at 2.36 volt while your voltage/lambda conversion table is set at 2.31v for AFR of 14.7.

Therefore in close loop operation, the ecu will be trying to achieve AFR of 14.3

you cant put 2.34 into the voltage/lambda conversion table auto-rounds the number... not sure how it works though???

the logs (attached above), show it is around 13:1 so i doubt that makes that much of a difference...

tinkerbell wrote:OK, so ELD D14 is not available as it is not wired up on my Hondata modified ECU.

is B6 0-5V full range input?

What brand wideband are you using?

LC-1 with DB gauge

i have set the LC-1's A1 (yellow) to output 0-5V and that is attached to D14 on the ECU.

but it sounds like D14 is limited in range, so need to either change the output for the LC-1 or change the input to the ECU...

for logging purposes i want to use the full 0-5v range, so would prefer to fix it than change the LC-1 outputs...

tinkerbell wrote:LC-1 with DB gauge

i have set the LC-1's A1 (yellow) to output 0-5V and that is attached to D10 on the ECU.

but it sounds like D10 is limited in range, so need to either change the output for the LC-1 or change the input to the ECU...

for logging purposes i want to use the full 0-5v range, so would prefer to fix it than change the LC-1 outputs...

You can use D10, D12, or B6, read the help files to get a better understanding. Try grounding the LC1 to the thermostat housing, that's where the ECU is grounded ( in most cases). Does the AFR reading on the DB gauge match the reading on the s300 display?

Have you removed the two resistors to use d10?

Take a look at settings in close loop parameter.This is set for B6 wideband input. You can Try these setting in close loop. Please note information on analog inputs in settings.

AREA876 wrote:You can use D10, D12, or B6, read the help files to get a better understanding.

cant use D10 as it is not wired up on my ECU.

EDIT: actually using OBD2a so it is D16 - DOH!

so B6 is full range 0-5V?

Try grounding the LC1 to the thermostat housing, that's where the ECU is grounded ( in most cases).

done.

Does the AFR reading on the DB gauge match the reading on the s300 display?

pretty close...

AREA876 wrote:Take a look at settings in close loop parameter.This is set for B6 wideband input. You can Try these setting in close loop. Please note information on analog inputs in settings.

nice work - thanks!

OK, so on OBD2a ecu the ELD is on D16

but in SManager 'Closed Lopp Parameters' there are only options for OBD1 pinouts...

do i just select D10 ELD anyways?

( i assume so as i had the wideband going into D7 and had selected D14 in the drop down box and it was working before...)

tinkerbell wrote:OK, so on OBD2a ecu the ELD is on D16

but in SManager 'Closed Lopp Parameters' there are only options for OBD1 pinouts...

do i just select D10 ELD anyways?

Yes

Note if using D10, use Logworks to confirm AFR reading. If both s300 and DB guage readings are different from Logworks then you have to remove the two resistors R136 and R138 for the US ECU.