OSE 12P V112

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Re: OSE 12P V112

Postby TdracerTd » Fri Oct 17, 2014 7:33 pm

Awesome. Thanks vl. Can't wait to give it a go.

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Re: OSE 12P V112

Postby VL400 » Sat Nov 01, 2014 10:03 pm

For those that are having offset issues with wideband readings on pin D8 there is a resistor that can be removed from the ECU. Removing it will not cause a problem if you dont need to or if the offset is from poor grounding, but for widebands that are using PWM DAC analog outputs it will remove or greatly reduce the AFR offset.

Most new widebands use a PWM DAC output as its far cheaper to implement (cost is one resistor and a capacitor using a spare PWM output from the controller's processor), some known models using this type of output are...
- Innovate MTX-L
- Innovate LC2
- 14point7 Spartan, SLC OEM/EvK


Here is what needs to be removed, it is a 51K resistor...
808 Pin D8 Mod For Wideband.jpg
808 Pin D8 Mod For Wideband.jpg (448.66 KiB) Viewed 5162 times




Known models using a proper analog DAC which should not have a problem are..
- Innovate LM1
- Innovate LC1

If you are using one of these but are seeing an AFR offset then the problem is likely poor grounding.

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Re: OSE 12P V112

Postby festy » Sun Nov 02, 2014 11:56 am

You can add 14point7's SLC OEM/EvK to the PWM DAC list.

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Re: OSE 12P V112

Postby ejukated » Sun Nov 02, 2014 2:38 pm

What does the resistor actually do?

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Re: OSE 12P V112

Postby VL400 » Sun Nov 02, 2014 3:24 pm

festy wrote:You can add 14point7's SLC OEM/EvK to the PWM DAC list.

Thanks, added them.

ejukated wrote:What does the resistor actually do?

Its a pull down resistor.

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Re: OSE 12P V112

Postby TdracerTd » Tue Nov 04, 2014 6:12 pm

Blew this on my pcm this arvo. Migrated my existing cal over to the new version. I had to zero out minimum de bpw, it was originally set to 0.10, but it flooded badly and wouldn't start on v112. Why would that be?

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Re: OSE 12P V112

Postby VL400 » Tue Nov 04, 2014 6:54 pm

Can you post your before and after migrate cal, will confirm it is ok.

Was there a reason you changed a DE parameter for a no start situation?

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Re: OSE 12P V112

Postby TdracerTd » Tue Nov 04, 2014 7:14 pm

I have had problems with this before on v111. Had to muck around with it a bit to get it right. Everything else was okay, so just tried it out of desperation :lol:

The cals are on my laptop, which I have just locked away in the shed. I will post them tomorrow.

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Re: OSE 12P V112

Postby VL400 » Tue Nov 04, 2014 7:43 pm

Sounds unrelated to just v112 if you had the same problem on v111? Or would it still not run on v112?? Its a setting that would make bugger all difference for the problem you describe.

Maybe you have missed one of the warmup tables being on E85, "Map X: A/F Ratio - Initial Run A/F Ratio Offset vs Coolant Temperature". Worth checking its not using petrol offsets.

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Re: OSE 12P V112

Postby Holden202T » Wed Nov 05, 2014 8:03 am

I missed that one originally for methanol tune lol ;)

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