So I understand I need to setup the custom PID. I'm using the AEM UEGO wideband. It reads 10-18afr
The formula reads:
volts/.625 + 10 + (.5)
Is that correct?
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So I understand I need to setup the custom PID. I'm using the AEM UEGO wideband. It reads 10-18afr
The formula reads:
volts/.625 + 10 + (.5)
Is that correct?
volts/.625 + 10.5 I believe would be a more correct way. Whether the .5 is the right correction number for your .5 difference between the scanner and HPTuners, maybe. I adjusted my "10" number to correct mine, but some have adjusted the .625 part. You will likely have to experiement a bit. Have a look at this thread and see if it helps at all http://www.hptuners.com/forum/showthread.php?t=20433
Any offset in addition to the base AFR (10) must
be an attempt to correct ground errors and these
will vary from vehicle to vehicle, wideband to
wideband. You can't even count on the offset being
self-consistent (primarily driven by heater current
and that, varying w/ exhaust gas and outside temp).
You should measure endpoint readings (force the
WB to output 0.000V, record raw volts for 10:1;
force WB output to 5.000V, record raw volts for
18:1; ideally, try out 1, 2, 3, 4 as well to get an
idea of any nonlinearities and fill in a custom PWL
function for the PID) so you know for sure on your
hardware.
I agree. Just make sure you do this at the operating voltage. IE: without the engine running you only have ~12V. with it on there is ~14V. It's important to take these measurements at ~14V (engine on).Quote:
Originally Posted by jimmyblue