Why the ecu make my tune run richer over time ?

[FR-S Matt]

Originally Posted by Dynotronics1

that's not quite correct. The STOCK program is only scaled down to 12.17. A simple reset of the scalar will net you correct readings down to 10.5 with no loss of resolution.

OP, you might want to log injector PW on that to really see where you are. I would bet your pig rich based on a few other parameters I'm seeing on that log

Looking forward to you tuning my car locally. :happy0180:

[Dynotronics1]

Originally Posted by ft_sjo

That's amazing. You can increase the range, whilst not losing resolution. Please let us into your secret on how ADC's work like this.

I'm assuming that's your attempt to be a a wise ass? Look at the table, its plenty easy to understand

[ft_sjo]

Originally Posted by Dynotronics1

I'm assuming that's your attempt to be a a wise ass? Look at the table, its plenty easy to understand

Yes, it scales 0-5v over a set number of cells. Now who is trying to be the wise ass?

[Dynotronics1]

Originally Posted by ft_sjo

Yes, it scales 0-5v over a set number of cells. Now who is trying to be the wise ass?

no it does not read 0-5v. Again, look at the table, and you will understand

[ft_sjo]

What do you think the raw adc value relates to?

[Dynotronics1]

Originally Posted by ft_sjo

What do you think the raw adc value relates to?

LOL

[StormTrooper]

Resolution a relative thing.....i'm not sure of the point at which making the range wider will affect the resolution but think of it this way.

a 30" TV will look the same with 720p as 1080p. only when you get over 50" can the majority of people tell the difference. So while you technically lose resolution it may not matter.


also unless the denso ecu has changed a lot your car starts at .5x and goes up to 1x after time under load without knock. If you never reach 1 then i'd say your tune is too agressive.

many things will alter stft like fuel changes temp and elevation. so if you were tuned with one fuel or > 20F temp swing then your trims will go nuts.


* My opinion w/ lots of reading and interactions with a local tuner.

[Sportsguy83]

Originally Posted by Dynotronics1

I'm assuming that's your attempt to be a a wise ass? Look at the table, its plenty easy to understand

Yep, 100% of the time....

[Sportsguy83]

Originally Posted by mad_sb

Because your stacking up a long term positive fuel trim. More info here

Are you coming for Southeast 86 meet in Orlando? Thanks for bringing so much knowledge and being so transparent. I would like to personally thank you at the meet.

[s2d4]

Originally Posted by ft_sjo

Yes, it scales 0-5v over a set number of cells. Now who is trying to be the wise ass?

No it doesn't? Where did you get that info?

[ft_sjo]

Originally Posted by s2d4

No it doesn't? Where did you get that info?

From the maf sensor linearization table in front of me....

[Toma]

Originally Posted by Dynotronics1

I'm assuming that's your attempt to be a a wise ass? Look at the table, its plenty easy to understand

He's too busy trying to sound like an arrogant know it all to actually research something.

[s2d4]

Originally Posted by ft_sjo

From the maf sensor linearization table in front of me....

Thought it was something along the lines of 0.6 up to 3.7 volts....

[coyote]

The people having an argument here and talking about two completely different sensors and tables.