[VNeBLOB42]

Originally Posted by new2the3

If I can currently run 20% E85 OK with the OTS Stage 1 maps, I don't see why it would be so difficult to make another map that would be better optimized for E85 use.

I think its because there is so much inconsistency in the blends based upon all users and E85 fuel stations. would be tough to create an OTS map and have it work optimum for all users.

[marv85]

Wow that was fast! Was reading through a heated discussion on this support just a few days back and here it is! Great job! and great fuel source haha

[enrita]

This is just awesome!

[ErvGotti]

It definitley works. I've been running a 30% blend for a while now and have seen my STFT as high as 24, with the suggested adjustments in ATR in my last couple of runs STFT only went as high as 5 and stayed within 1-5. I'm really pleased and will try running a higher blend on the next fill up.

Awesome job Cobb.

[Deadwrong]

[Jake@MOTIV]

Originally Posted by themyst

It appears ProTuningFreaks helped Cobb bring this idea to fruition quicker than anyone would have liked. Flylow335 is responsible.

This is all the team at Cobb. I just helped by providing conversion/scalar values in a table from my past platforms. They are 100% to thank for finding the tables and getting this done!! I just bugged them a bunch hoping to have this. The team working on our platform over at Cobb is second to none.

[6MTE92]

Originally Posted by ErvGotti

It definitley works. I've been running a 30% blend for a while now and have seen my STFT as high as 24, with the suggested adjustments in ATR in my last couple of runs STFT only went as high as 5 and stayed within 1-5. I'm really pleased and will try running a higher blend on the next fill up.

Awesome job Cobb.

What were your STFT's above 5500?

[BRAISKI]

I don't know much about cobb, but can you program it to be fuel efficient?

[JStang]

Originally Posted by BRAISKI

I don't know much about cobb, but can you program it to be fuel efficient?

There is no economy map with COBB.

[pHo_e92]

Originally Posted by JStang

There is no economy map with COBB.

yes there is its called valet map lol

[benzy89]

Originally Posted by BRAISKI

I don't know much about cobb, but can you program it to be fuel efficient?

Driver Mod I actually have no idea if there's a turbo by-pass map like on the JB4, but since turbos are more fuel efficent (when compared against equally powered N/A or S/C motors), as long as you put the cruise control on you should see quality MPG

[rader1]

Originally Posted by benzy89

Driver Mod I actually have no idea if there's a turbo by-pass map like on the JB4, but since turbos are more fuel efficent (when compared against equally powered N/A or S/C motors), as long as you put the cruise control on you should see quality MPG

+1
Also, In theory, you could create an ATR map that runs very low requested load and that should help with MPGs

[Vwgrk1]

Originally Posted by ErvGotti

It definitley works. I've been running a 30% blend for a while now and have seen my STFT as high as 24, with the suggested adjustments in ATR in my last couple of runs STFT only went as high as 5 and stayed within 1-5. I'm really pleased and will try running a higher blend on the next fill up.

Awesome job Cobb.

What did you enter as the value? about 1.010? Just want to check my understanding of that table against someone else's running about 30% E85.

[6MTE92]

Originally Posted by Vwgrk1

What did you enter as the value? about 1.010? Just want to check my understanding of that table against someone else's running about 30% E85.

I havent played with this yet but if your runng about 30% E85 (not 30% ethanol), i would start with 1.10 and log it to see how the trims look.

[ErvGotti]

Originally Posted by 6MTE92

What were your STFT's above 5500?

I've got to go home to look at the log, but I didn't see anything above 5 that I remember when I went WOT.

[ErvGotti]

Originally Posted by Vwgrk1

What did you enter as the value? about 1.010? Just want to check my understanding of that table against someone else's running about 30% E85.

1.110

[VNeBLOB42]

Anybody located in NorCal to help out a noob to tune with E85 using ATP?

[Mangler]

Originally Posted by ErvGotti

1.110

So if the scalar for 100% E85 is 1.4 but you are running 25% E85, is it 25% of 1.4? The table is written for percentage ethanol up to E85 not percentage E85 in the tank.

So 25% is 1.1
50% is 1.2
75% is 1.3
and 100% is 1.4?

edit: found it:

X = % of E85 added to gasoline
Y = actual % of ethanol in your E85
Z = % of ethanol in your pump gasoline

(X * Y) + ((1 - X) * Z) = overall ethanol content

So if your E85 is really 85%, and your mix is 30% E85 to gasoline, and your gasoline is 10% ethanol from the pump...

X = 30%
Y = 85%
Z = 10%

(.30 * .85) + ((1 - .30) * .10) = .325 or 32.5% ethanol

- Gary

T

[MDORPHN]

Originally Posted by Mangler

So if the scalar for 100% E85 is 1.4 but you are running 25% E85, is it 25% of 1.4? The table is written for percentage ethanol up to E85 not percentage E85 in the tank.

So 25% is 1.1
50% is 1.2
75% is 1.3
and 100% is 1.4?

edit: found it:

X = % of E85 added to gasoline
Y = actual % of ethanol in your E85
Z = % of ethanol in your pump gasoline

(X * Y) + ((1 - X) * Z) = overall ethanol content

So if your E85 is really 85%, and your mix is 30% E85 to gasoline, and your gasoline is 10% ethanol from the pump...

X = 30%
Y = 85%
Z = 10%

(.30 * .85) + ((1 - .30) * .10) = .325 or 32.5% ethanol

- Gary

T

Does this take into account the 10% ethanol already in "regular" pump gas?

Neil

[Mangler]

Originally Posted by MDORPHN

Does this take into account the 10% ethanol already in "regular" pump gas?

Neil

Yes *Z is the ethanol content in you pump gas.

T

[Mangler]

Anyone log IDC with fuel scalar employed and running E85? Did the scalar change the IDC, HPFP pressure, LPFP pressure, does it fool the vacuum that runs the HPFP? What is the scalar scaling?

T

[6MTE92]

Originally Posted by Mangler

Yes *Z is the ethanol content in you rump gas.

T

Rump gas?! Say it ain't so!