Converted to E85

[Carl T]

Do not put E85 in a stock non E85 truck. They do not have the ability to recognize or perform self checks on the sensor. You will likely set 171/174 codes.

 

As for the hoses it is a great way to do it. We install and sell our kits because they are quicker to install and work on all vehicles.

[Carl T]

So if the truck is a "flex fuel truck" then why didn't it have the sensor already? That indicates that it is not setup for flex fuel in my opinion.

 

If your tech is a GM service technician I would take that with a grain of salt and do your own homework on it.

 

You could certainly be right, but it I'd verify that with a tuner that uses an aftermarket tool such as HP tuners.

 

They don't install sensors in the trucks because they cost millions for ppl that do not use them. My guess is they made them standard on 14 5.3'some to show off the gains and then made them optional.

Edited April 15, 2016 by Carl T

[bobbobtar]

Do not put E85 in a stock non E85 truck. They do not have the ability to recognize or perform self checks on the sensor. You will likely set 171/174 codes.

 

As for the hoses it is a great way to do it. We install and sell our kits because they are quicker to install and work on all vehicles.

Ran two tanks of E85 thru the truck before I got around to installing the hoses and sensor and did not throw any codes. Carl my independent GM tech. could not find a way to flash my 2016 truck(nothing in the ECM) have you done any new trucks yet, my theory is once a sensor gets plug in the computer sees it. Just like when you plug a printer into your desktop.

[transam69230]

You need someone with hptuners or efilive. I suggest pulling the computer out and mailing it to Cjtunes.com aka Carl T or finding a local competent tuner in your area.

 

They will be able to flash your computer for the fuel composition sensor you installed and it will function correctly.

[Scooter Scott]

You need someone with hptuners or efilive. I suggest pulling the computer out and mailing it to Cjtunes.com aka Carl T or finding a local competent tuner in your area.

 

They will be able to flash your computer for the fuel composition sensor you installed and it will function correctly.

 

I don't see how if a GM tech can't program it in the ECU how hptuners or EFI live can.

[Rawyzf]

Ran two tanks of E85 thru the truck before I got around to installing the hoses and sensor and did not throw any codes. Carl my independent GM tech. could not find a way to flash my 2016 truck(nothing in the ECM) have you done any new trucks yet, my theory is once a sensor gets plug in the computer sees it. Just like when you plug a printer into your desktop.

Plugging a $100 printer into a $500 Laptop vs $50 sensor into a $45000 truck is a bit different.

 

I hope your tech knows what he's doing. 50% of the ones I've dealt with didn't seem to know much more than your typical printer repair man.

 

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[bobbobtar]

The point being is that the computer recognized the sensor and did not have to be flashed.

[Rawyzf]

The point being is that the computer recognized the sensor and did not have to be flashed.

I don't think that's the case.

 

You said you ran 2 tanks of e85 before you even installed the sensor.

 

Your truck may run with E85, but I'm guessing timing etc is not where it should be.

 

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[SouthernSilveradoGuy85]

I thought flex fuel engines required different fuel injectors that can spray at a higher PSI. If so then I guess they just put the E85 spec injectors in all of them, at least all of the 4.3s and 5.3s.

[Carl T]

The point being is that the computer recognized the sensor and did not have to be flashed.

 

Incorrect, the ECU sees a frequency output from the sensor but does nothing with it. Think of it a an employee yelling feedback to a deaf manager, not going to help. The 16 tune files have a stoich of 14.11:1 across the board for the AFR vs alcohol % so even if it could tell the % it would not alter the commanded AFR's.

 

If your dealer tech knew what he was doing he could flash a stock flex file into your truck and ENABLE the fuel composition sensor. Without some sort of programming you are doing more harm than good.

I thought flex fuel engines required different fuel injectors that can spray at a higher PSI. If so then I guess they just put the E85 spec injectors in all of them, at least all of the 4.3s and 5.3s.

Flex or no flex they all received the same fuel system.

[bobbobtar]

Carl, not dealer tech, BBP is doing that as we speak.

[scott.moody.9401]

E85 has 30% less energy content than gas (E10). It requires 30% more fuel mass or the mixture will be lean.

 

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[Carl T]

Carl, not dealer tech, BBP is doing that as we speak.

I assumed if you were working with a tech that would advise running a flex fuel sensor without a tune it was a dealer tech. I am sure they will take good care of you.

[RDKILL]

I know this thread is 2yrs old, but I was searching E85 conversions to see what others have done.

I was just thinking of changing my fuel injectors to 750's and have BBP send me a tune for it, and was looking to see if anyone else has done this.

I guess as of 2yrs ago, no one has...LOL!

 

I currently run a 50/50 E85/93oct and have no issues other than a quicker response and pick up.

I have been running this mixture for over a year now and had it tuned with BBP to run the 50/50 mixture, I haven't done anything else as far as fuel management goes. Same fuel lines/pump and no sensor.

My truck is a '16 RCSB and is NOT a factory Flex Fuel truck, so it's not like it can't be done, but a tune is a definite at minimum like what I did in order to make it work.

I hope this helps...
 

[Nasty]

56 minutes ago, RDKILL said:

I know this thread is 2yrs old, but I was searching E85 conversions to see what others have done.

I was just thinking of changing my fuel injectors to 750's and have BBP send me a tune for it, and was looking to see if anyone else has done this.

I guess as of 2yrs ago, no one has...LOL!

 

I currently run a 50/50 E85/93oct and have no issues other than a quicker response and pick up.

I have been running this mixture for over a year now and had it tuned with BBP to run the 50/50 mixture, I haven't done anything else as far as fuel management goes. Same fuel lines/pump and no sensor.

My truck is a '16 RCSB and is NOT a factory Flex Fuel truck, so it's not like it can't be done, but a tune is a definite at minimum like what I did in order to make it work.

I hope this helps...
 

Your truck didnt have e85 at first and you just added injectors?