NefMoto > Noob Zone > Noob Questions (Moderator: turboat) > ME 7.5 AFR METER
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Author Topic: ME 7.5 AFR METER  (Read 3123 times)
kacperoooni
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« on: May 08, 2019, 01:35:09 AM »
Hi guys,

I wonder if we could somehow numb wideband me 7.5 to measure afr on the table with only power and o2 connected. Is it even possible? I wanted to use it as cheap afr meter to help me with injector scaling. The idea is to connect WB o2 with ecu and power. Which maps should I change to enforce lambda control from 0 rpm?
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adam-
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« Reply #1 on: May 08, 2019, 02:01:19 AM »
I don't even understand.  How can you measure AFR at 0rpm?
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Blazius
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« Reply #2 on: May 08, 2019, 03:30:02 AM »
Quote from: kacperoooni on May 08, 2019, 01:35:09 AM
Hi guys,

I wonder if we could somehow numb wideband me 7.5 to measure afr on the table with only power and o2 connected. Is it even possible? I wanted to use it as cheap afr meter to help me with injector scaling. The idea is to connect WB o2 with ecu and power. Which maps should I change to enforce lambda control from 0 rpm?

The f... You cant measure AFR on table.. an AFR meter reads oxygen(air)/fuel ratio in exhaust gas.. rofl.
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fknbrkn
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« Reply #3 on: May 08, 2019, 04:14:11 AM »

Obviously he means to made a standalone me7 ecu as afr meter in another narrowband car
Good question btw but imo taking much time to reversing and patching
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BlackT
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« Reply #4 on: May 08, 2019, 04:48:59 AM »
As I understand he wants to connect only ECU and lambda probe to some other engine.  So that ME 7.5 behavier as cheap AFR meter.
So he must force ECU to measure lambda even if there is no signal from crankshaft.
I have same idea long time ago, but back then it was easier to order LSU controler for 40 $
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Blazius
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« Reply #5 on: May 08, 2019, 09:40:44 AM »
AH. aight. Honestly. just get one of these.

https://www.14point7.com/products/spartan-lambda-controller-2

choose it with the lambda sensor. 125 usd, its the cheapest you gonna get. a 30 dollar ecu + 35 dollar lambda + a lot of setting up, time , and reverse engerineering I guess. Choose.

or this:

https://www.14point7.com/products/sigma-lambda-controller-free-2

literally cheapest setup withor without sensor included.
« Last Edit: May 08, 2019, 09:43:21 AM by Blazius » Logged
BlackT
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« Reply #6 on: May 08, 2019, 12:53:31 PM »
I have this one https://www.14point7.com/products/slc-oem
And I use it with LSU 4.9 from audi 2.0TFSI
Very good product, worth that money
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