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Author Topic: Simulated Narrowband  (Read 4879 times)
britishturbo
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« on: December 19, 2012, 09:48:22 AM »

So I wanted to share with you guys what I have setup on my simulated narrowband output to the me7.

My output is set such that 1V is 11:1 AFR and 0 V is 18:1 AFR.
This puts 14.5AFR right at 0.5V.
The me seems more than happy this way.
The advantage is I get a true wideband value on the 1V scale.
To convert voltage to AFR it's ((7-(Voltage * 7))+11

Seems to be working great so far.
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240sxpooter
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« Reply #1 on: December 21, 2012, 06:18:48 AM »

Nice work. Does it seem to be logging correctly?
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britishturbo
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« Reply #2 on: December 21, 2012, 06:21:46 AM »

Nice work. Does it seem to be logging correctly?

Yes its working great. The AFR on the me7 matches the wideband within 0.1 AFR :-)
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grey
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« Reply #3 on: December 21, 2012, 08:01:41 AM »

Nice work, Thanks for this!
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ddillenger
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« Reply #4 on: December 21, 2012, 08:04:50 AM »

Are you planning on keeping the wideband running in parallel, or? Is it acting as input for one bank, or two? Do you think it's a viable option as a replacement? Any chance of some reverse engineering to take advantage of the increased sensor resolution?

Inquiring minds want to know!

Lol. Good job. I read about this on AZ, was hoping for some details.
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britishturbo
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« Reply #5 on: December 21, 2012, 09:04:47 AM »

Are you planning on keeping the wideband running in parallel, or? Is it acting as input for one bank, or two? Do you think it's a viable option as a replacement? Any chance of some reverse engineering to take advantage of the increased sensor resolution?

Inquiring minds want to know!

Lol. Good job. I read about this on AZ, was hoping for some details.

The ecu file that I'm running only requires an input on Bank 1. This is the simulated narrowband signal from the wideband.
The ecu internally uses the Bank 1 signal for Bank 2 as well...
Post cat sensors are coded out also.

I haven't tried to do anything with the code to try and use the larger resolution...
The only real downside could be a larger swing in AFR when the ecu is correcting than might be the case with a true narrowband.

I have a video of the car idling like this. I'll upload it here shortly.
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britishturbo
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« Reply #6 on: December 21, 2012, 09:13:06 AM »

http://www.youtube.com/watch?v=mBkWuX09Xw4
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