Here's the tune and log from the run home.
This shows the NBO2 voltages.
STFT Main VE dialling etc....
Here's the tune and log from the run home.
This shows the NBO2 voltages.
Howard
YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
DUCT TAPE.
IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
98 K1500 'HOLDEN' Suburban.
Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit
Interesting...
HO2S1x voltages are shifted down a little (lean), confirmed by wideband AFR (ignore where I put the cursor).
Please elaborate Joe????
Howard
YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
DUCT TAPE.
IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
98 K1500 'HOLDEN' Suburban.
Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit
Oh, I was observing that your HO2S1x voltages swing between 0mV and 750mV... (i.e. the centre voltage would be 375mV rather than 450-500mV) which indicates a lean tendancy, and your WB says about 17 AFR...
they correlate with each other.
Hmmm... the STFT's are trimming to this...!!!
Ahh....OK.
So...any idea how this would happen?
Howard
YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
DUCT TAPE.
IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
98 K1500 'HOLDEN' Suburban.
Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit
looking at the data it's between 0 and 960???
Howard
YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
DUCT TAPE.
IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
98 K1500 'HOLDEN' Suburban.
Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit
Joe, the average voltage is around 520mv which correlates roughly with his switchpoints in the tune. Is this the wrong way to look at the voltages? I would of thought with the equal times spent over & under the switchpoint an average value would be a fair indication.
Howard,
I had to break off last night, I do apologize...
5.7ute, you're right, the average is ok, I was not looking at it right, please disregard my comment about HO2S1x voltages.
But...
look at the wideband AFR, it shows about 17 AFR...
a look in the tune shows B3647 to be EQ 1.00 and B3601 to be 14.63...
the log shows the STFT's are trimming to this, but the wideband says 17.
I expected the wideband AFR to be hugging the commanded AFR...!!!
Last edited by joecar; April 11th, 2008 at 03:20 AM.
Damn Joe...what? You've got a life outside of this forum and tuning cars?
Where did you get that? Gotta put that on my list as the next mod I buy. Lol!
I used to have the commanded and actual AFR pretty close...so I don't know what's happened.
Howard
YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
DUCT TAPE.
IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
98 K1500 'HOLDEN' Suburban.
Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit
My Mrs was yelling at me to eat or sleep or something......I think that's her job...
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