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E85?

philbilly20

By philbilly20
in Engines & Drivetrain

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mjj Enthusiast

mjj

Posted
Posted

How did it go?

All updated and installed on my truck. But we had some sloppy slick roads this morning so I couldn't really test it out too well. I've been happy with the InTune up to this point. Seems better than the previous version diablo 91+ tune. Throttle response seemed better but I need to put some more miles on it on good roads...

calgator73 Senior Enthusiast

calgator73

Posted
Posted

All updated and installed on my truck. But we had some sloppy slick roads this morning so I couldn't really test it out too well. I've been happy with the InTune up to this point. Seems better than the previous version diablo 91+ tune. Throttle response seemed better but I need to put some more miles on it on good roads...

It must be kind of challenging to tune for E-85. Stoich for E-0 is 14.7 and decreases as alcohol increases to 9.7 using actual E-85. But... Class 1 E-85 only has to have a min of 79% ethanol and it goes down to 70% for class 3. Octane numbers drop from as moisture contaminates the system and as the gas percentages increase.

mjj Enthusiast

mjj

Posted
Posted

It must be kind of challenging to tune for E-85. Stoich for E-0 is 14.7 and decreases as alcohol increases to 9.7 using actual E-85. But... Class 1 E-85 only has to have a min of 79% ethanol and it goes down to 70% for class 3. Octane numbers drop from as moisture contaminates the system and as the gas percentages increase.

I know Diablosports is based out of Florida so they probably have a fairly consistent ethanol % down there for tuning. I've been reading about 69% with Speedway E85 here in MI. The new tune felt nice today, was able to do a little logging with the Torque app which I haven't looked at yet. Did get one 0-60 run in. 6.9 seems alright for my 2014 Dbl cab z71, 5.3, 3.08, LT285/70R17. Had a lot of tire spin off the line, I think I can do better. Recorded a 7.5 with a little wheel spin using the InTune logging last week.

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calgator73 Senior Enthusiast

calgator73

Posted
Posted

I know Diablosports is based out of Florida so they probably have a fairly consistent ethanol % down there for tuning. I've been reading about 69% with Speedway E85 here in MI. The new tune felt nice today, was able to do a little logging with the Torque app which I haven't looked at yet. Did get one 0-60 run in. 6.9 seems alright for my 2014 Dbl cab z71, 5.3, 3.08, LT285/70R17. Had a lot of tire spin off the line, I think I can do better. Recorded a 7.5 with a little wheel spin using the InTune logging last week.

Do you notice any full throttle upshift issues on your 1-2 when running e-85?

 

On my truck running gas it doesn't seem bad...nice smooth and precise. On e-85 it feels like a massive pause. When rolling about 30-35 and flooring it I get a dramatic pause and almost feels like the vacuum secondaries on a Q-jet opening up followed by brisk acceleration.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

I run E85 all the time, no pause just go. The only time I don't use it is on a trip and it's not available and I miss it.

 

 

Sent from my iPhone using Tapatalk

02suburbanZ71 Senior Enthusiast

02suburbanZ71

Posted
Posted

I cant find the E85 fill up procedure for my 2002 suburban its not in the manual and i read somewhere because it has the sensor in the tank it has a different fill up procedure can someone point me in the right direction. I ran it on my 2011 but not 02

MikeNH Senior Enthusiast

MikeNH

Posted
Posted

I cant find the E85 fill up procedure for my 2002 suburban its not in the manual and i read somewhere because it has the sensor in the tank it has a different fill up procedure can someone point me in the right direction. I ran it on my 2011 but not 02

 

I'm not sure 2002 offered E85 compatibility.

02suburbanZ71 Senior Enthusiast

02suburbanZ71

Posted
Posted

I'm not sure 2002 offered E85 compatibility.

It does it was the first year. I have the sticker and vin Z which is L59

MikeNH Senior Enthusiast

MikeNH

Posted
Posted

Some FFVs used an optical sensor to determine alcohol content. I'd follow the same procedure as they currently recommend.

02suburbanZ71 Senior Enthusiast

02suburbanZ71

Posted
Posted

Some FFVs used an optical sensor to determine alcohol content. I'd follow the same procedure as they currently recommend.

I have the sensor. Can you remind me on the procedure please. Thanks

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