accuracy of fuel trim autotune

Yves · Post by **Yves** » Thu Jul 21, 2016 5:28 am

How accurate is this or is it suffering from the same problems as regular autotune with regards to exhaust gas delay ?

LT401Vette · Post by **LT401Vette** » Thu Jul 21, 2016 6:50 am

It uses the same delays as normal auto tune.

If you are having issues do to the delay settings, you either have a very odd set up, or more likely have a problem somewhere else.

Yves · Post by **Yves** » Thu Jul 21, 2016 1:39 pm

LT401Vette wrote:It uses the same delays as normal auto tune.

If you are having issues do to the delay settings, you either have a very odd set up, or more likely have a problem somewhere else.

They argument 'have a problem somewhere else' is usually used here when the developpers don't have an answer. It's plain wrong in a lot of cases.

LT401Vette · Post by **LT401Vette** » Thu Jul 21, 2016 2:38 pm

Could be, but thus far you have not provided any information or details about your issue. So unfortunately I have to fall back to past experience in supporting thousands of users for years.
Your case could be different, I run into new scenarios commonly. But again no details.

Yves · Post by **Yves** » Fri Jul 22, 2016 3:32 am

the msq is in the thread in MLV. What other specs do you need ?

Post by **jsmcortina** » Fri Jul 22, 2016 3:53 am

Yves wrote:the msq is in the thread in MLV. What other specs do you need ?

Which thread? Give an exact link.

James

LT401Vette · Post by **LT401Vette** » Fri Jul 22, 2016 7:10 am

I see you are using ITB mode, that is good to know. That is a minority usage.

What type of problem are you having?
Do you have a datalog where it was not behaving as desired?

Yves · Post by **Yves** » Fri Jul 22, 2016 9:28 am

LT401Vette wrote:I see you are using ITB mode, that is good to know. That is a minority usage.

What type of problem are you having?
Do you have a datalog where it was not behaving as desired?

I have not used autotune since I first went over to ITB mode. Like I said, I usually use MLV to dial in the fuel table. However, in all of the times I have used autotune in an effort to get close, it always gave results that were far from optimal.

Yves · Post by **Yves** » Fri Jul 22, 2016 9:30 am

jsmcortina wrote:
Yves wrote:the msq is in the thread in MLV. What other specs do you need ?
Which thread? Give an exact link.

James

http://www.msextra.com/forums/viewtopic ... 00&t=63291

Post by **jsmcortina** » Fri Jul 22, 2016 9:32 am

So long as "Load" is being used as the load axis on the table, it shouldn't matter what fuel algorithm you use.

James

Yves · Post by **Yves** » Fri Jul 22, 2016 12:32 pm

I agree.

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accuracy of fuel trim autotune

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