nah - 300 is about when the ECU goes into open loop so the STFT will be 0% - which in tern means the trims wont update...

 

Thanks for the validation!

 

Yes, I am only 1 tick different from your values.

This is an hour drive on the second tank of E-85

 

Oh, and thanks again for doing all the work for me.

I loaded your values in and she started right up as if I changed nothing. And same with E-85. I just took the scale * .70 and ran it completely out of gas. Then I filled her up with E-85 and she started like a champ. This was way too easy.

 

I'm curious, your scaling of 943 is for 93 octane vs my scaling of 914...

Also the latencies seem a bit different as well...

Mine are:

Wonder what would happen it I tried yours?


No problem, glad I can contribute to the community!

 

Yeah, I bumped the Scaling up to 1 size bigger and the Latencies to 1 size lower.

My gas is 91 octane with 0% Ethanol. It shouldn't be any different than 93 octane. I put the Ethanol rating in there as some places have 93 octane with 10% Ethanol. The Ethanol can change your scaling.


Also, I just figured out the other day that I can log while starting the car. So this winter I will be logging during very cold starts to see if I can help it start easier on E-85. I did notice that the voltage dropped to 9 volts while cranking, so I'll probably have to mess with the latencies in that area.

 

Thanks for the additional info, I may play with my configuration a bit...I do have 10% ethanol at my pumps, which I see as a dbl edge sword...

I'll report back if/when I play with my settings.

 

IPW adder table if you don't already know.

My personal Evo 8 running E85 the last two years has started up first crank every time down to 12F after sitting all night in snow (about the coldest I've been in so far here in California).

Proper tweaking of the IPW adder table goes a long way to proper E85 cold starting.

- Bryan

 

Do you have the XML for the cranking IPW tables?

 

evo10base.xml

<scaling name="TimeInjCranking" units="ms" toexpr="x*0.005" frexpr="x/0.005" format="%.1f" min="0" max="500" inc="1" storagetype="uint16" endian="big"/>

<table name="Cranking Enrichment IPW Adder (Main)" category="Fuel" type="2D" scaling="TimeInjCranking">
<table name="Coolant Temperature" type="Y Axis" elements="9" scaling="Temp"/>
</table>

yourrom.xml

<table name="Cranking Enrichment IPW Adder (Main)" address="5753e">
<table name="Coolant Temperature" address="6124e"/>
</table>

------------------------------

Then just use the appropriate address's for your rom

 

Do you know where I can find the addresses for 52680015-20? I've been looking all over for weeks!

 

52680015
<table name="Cranking Enrichment IPW Adder (Main)" address="5749a">
<table name="Coolant Temperature" address="6101e"/>
</table>

<table name="Cranking Enrichment IPW Adder (Unused)" address="56aa4">
<table name="Coolant Temperature" address="6101e"/>
</table>

 

Tephra beat me to it.

- Bryan

 

 

FWIW: I'm currently using the AP, so I don't have those tables.

I'm most likely going to swap over once Tephra's mods are out. But in the mean time, I have to have map switching due to running E-85 and possibly not finding a E-85 station.