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Old 03-07-2011, 04:04 PM   #1
BowerR64
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My first ghetto run

LOL! logged my first ghetto run.



Go ahead laugh it wont hurt my feelings any.

I wanted to make sure i had everything working and hooked up correctly.


This wideband kit i got used off e-bay uses a serial port to log the data to the PC well i just happend to have this older IBM thinkpad laying around with a 266 P2 i think with windows ME on it. I figured i would try it and see if it will work. It seem to work ok. It was just a quick buz around the block and back 2-3 minutes i think if that.

Least ill be able to compare the 2 positions by doing it once like this then in the mani-cat position.


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Old 03-07-2011, 04:08 PM   #2
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lmfao! looks badass! as long as it works man!
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Old 03-07-2011, 04:17 PM   #3
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HAHA, great! The color matched zip tie was a nice touch. (white would have looked out of place)
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Old 03-07-2011, 05:08 PM   #4
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lmfao! looks badass! as long as it works man!
It looks badass? ill have to hook it up like this for focusfest.
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Old 03-07-2011, 05:11 PM   #5
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It looks badass? ill have to hook it up like this for focusfest.
haha yup

i'd rock it like that! as long as I know its working!
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Old 03-07-2011, 05:27 PM   #6
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Well i think its working but it doesnt look right.

Im not even sure how to run the car while im logging the data.

This was just from one stop sign down the road about 1/4 mile and back threw the neighborhood.

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Old 03-07-2011, 06:04 PM   #7
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what I don't see what wrong lol
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Old 03-08-2011, 05:50 PM   #8
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I tune a LOT of high end Sig boats 28-50 foot EFI Big Blocks and have made a pipe to go in the Exh that sticks up over the back of the boat about 4 feet to keep it dry with bungee cords to each side , thats where I put the o2 sensor and you think yours is ghetto LOL

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Old 03-11-2011, 12:25 AM   #9
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Quote:
Originally Posted by BowerR64 View Post
Well i think its working but it doesnt look right.

Im not even sure how to run the car while im logging the data.

This was just from one stop sign down the road about 1/4 mile and back threw the neighborhood.

I don't find that graphs are understandable or really usable. I like tables of numbers better. That way I can use Excel to sort them, find averages, find highest and lowest and so on.

But from what I see it looks like you where closed loop the whole time and let off the gas 4 times, which would be where it goes very lean ... because of the fuel cut on deceleration, or maybe it's shifting?

Now if you could export the log to Excel you could sort out the highs, say above 15.5 AFR and you'd be left with the acceleration portions of the graph. Then look at the time from the lowest to the highest sorted in order by time. That will show you how fast the sensor is reacting to changes in the engine. The faster it reacts the better. Slower response is a good sign of a sensor going bad. But for a case where the sensor is far down the exhaust as you have now, response time isn't important as it won't be as reliable as it would be closer to the source.
And if you do all that sorting and what not then use the "trendline" option in the Excel graph to find how close to Stoich you really are, or your target AFR. Trendline can be really handy at times.
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Old 03-11-2011, 01:27 AM   #10
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Quote:
Originally Posted by iminhell View Post
I don't find that graphs are understandable or really usable. I like tables of numbers better. That way I can use Excel to sort them, find averages, find highest and lowest and so on.

But from what I see it looks like you where closed loop the whole time and let off the gas 4 times, which would be where it goes very lean ... because of the fuel cut on deceleration, or maybe it's shifting?

Now if you could export the log to Excel you could sort out the highs, say above 15.5 AFR and you'd be left with the acceleration portions of the graph. Then look at the time from the lowest to the highest sorted in order by time. That will show you how fast the sensor is reacting to changes in the engine. The faster it reacts the better. Slower response is a good sign of a sensor going bad. But for a case where the sensor is far down the exhaust as you have now, response time isn't important as it won't be as reliable as it would be closer to the source.
And if you do all that sorting and what not then use the "trendline" option in the Excel graph to find how close to Stoich you really are, or your target AFR. Trendline can be really handy at times.
Yeah i just drove the car around the block, it might be shifting im not sure but i wasnt sure if it was even working correctly. Im still not sure how to use it. Hold the throttle at 2000 rpms? drive it under load and hold it at 2000?

Without a tach logged with the A/F reading i cant tell really what its doing. Unless i just rev the engine up and hold it at certin RPMs?

Its still new im still learning what i need and stuff so im just happy i got it working really.
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