I can't seem to lean her out.
04-30-2006, 05:56 PM
#1
I can't seem to lean her out. Ok, I am running the HPT 2Bar SD for the 98's. I have my commanded AFR at 1.13 across the board and am still getting like 11.7 to 12.0:1 AFR's on the wideband. My VE table is at zero at WOT (was positive and kept adding till it zeroed out). Now I have values in the 115 range in 100 Kpa cells over 3K RPM. Any ideas?
05-01-2006, 10:05 AM
#3
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Commanded as in, this is what the scanner echoes back
while running? Or commanded, like what is in some tune
table or other? Because there's a lot of modifiers and
layers that meddle, between the tables and the final fuel
multiplier commanded.
while running? Or commanded, like what is in some tune
table or other? Because there's a lot of modifiers and
layers that meddle, between the tables and the final fuel
multiplier commanded.
05-01-2006, 10:55 AM
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Originally Posted by 98Z28CobraKiller
Ok, I am running the HPT 2Bar SD for the 98's. I have my commanded AFR at 1.13 across the board and am still getting like 11.7 to 12.0:1 AFR's on the wideband. My VE table is at zero at WOT (was positive and kept adding till it zeroed out). Now I have values in the 115 range in 100 Kpa cells over 3K RPM. Any ideas?
05-01-2006, 04:25 PM
#7
Originally Posted by jimmyblue
Commanded as in, this is what the scanner echoes back
while running? Or commanded, like what is in some tune
table or other? Because there's a lot of modifiers and
layers that meddle, between the tables and the final fuel
multiplier commanded.
while running? Or commanded, like what is in some tune
table or other? Because there's a lot of modifiers and
layers that meddle, between the tables and the final fuel
multiplier commanded.
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05-01-2006, 04:28 PM
#10
Originally Posted by horist
perhaps OLFA table is richer than what you are commanding? (PCM will use OLFA if if it's richer than PE)
I am borrowing the wideband and have to give it back soon.
05-01-2006, 04:38 PM
#11
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oh.. when I saw that you were 11.7-12.0 and wanted to lean out... I assumed you were talkng about open loop
what do the stock O2 sensors show? What are your fuel trims?
what do the stock O2 sensors show? What are your fuel trims?
05-01-2006, 07:29 PM
#13
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Originally Posted by 98Z28CobraKiller
I am just using the wideband temporarly (until I get it all dialed in).
I am borrowing the wideband and have to give it back soon.
I am borrowing the wideband and have to give it back soon.
05-01-2006, 09:56 PM
#17
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Originally Posted by 98Z28CobraKiller
Appears that the OLFA is at 1.13 which should be about 13.0.
When your wideband and narrowbands don't agree then it's time to verify your wideband. If it's okay, then it's time to either fix the problem with the narrow-bands, or simply ignore them.
It sounds like you've just adjusted your high-load VE cells too high based on what your narrow-bands tell you. Personally I don't trust narrow-bands at all.
This is one of the down-sides to using the easy way of VE tuning.
05-04-2006, 02:34 PM
#18
http://www.hptuners.com/forum/showth...8488#post38488
Follow the link above to the outcome and to view the final tune and log files.
In a nut shell, lowering my VE (as White stated above) I was able to get control over my PE table and get AFR right.
Thanks guys.
Follow the link above to the outcome and to view the final tune and log files.
In a nut shell, lowering my VE (as White stated above) I was able to get control over my PE table and get AFR right.
Thanks guys.
05-04-2006, 03:23 PM
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That sounds right to me.
If you still find you are getting positive fuel trims in the high-load cells that carry over to WOT, you might consider redefining the boundaries of the high-load cells as was suggested in other threads by Jimmyblue.
If you still find you are getting positive fuel trims in the high-load cells that carry over to WOT, you might consider redefining the boundaries of the high-load cells as was suggested in other threads by Jimmyblue.
05-04-2006, 03:42 PM
#20
Originally Posted by white2001s10
That sounds right to me.
If you still find you are getting positive fuel trims in the high-load cells that carry over to WOT, you might consider redefining the boundaries of the high-load cells as was suggested in other threads by Jimmyblue.
If you still find you are getting positive fuel trims in the high-load cells that carry over to WOT, you might consider redefining the boundaries of the high-load cells as was suggested in other threads by Jimmyblue.
Please explain or post a link.