e85 on 2014+ Silverados
 

Searched, but didn't find any results.

I have a 2018 Silverado 5.3, non-flex fuel. Unfortunately there were no more flex-fuel trucks in April when they had that 12k off MSRP so I settled on one without it.

From my understanding, it was a $100 option for flex fuel. Can I just add the fuel sensor to my truck and start running e85? Or do I need the sensor and a tune? Thank you.

Sensor and a tune.

You must enable the flex fuel features in the tune and make sure everything works.

Thank you very much.

https://www.ebay.com/itm/OEM-1357742...tW4kUR&vxp=mtr


I bought this sensor from amazon, then bought the wire harness connector for another 7-8 bucks. They make one of them with longer hard lines but you'll have to dig around for one other those or make fittings for your fuel line.

It's a direct plug and play once you wire it in and enable the sensor is the tune file. Yes, HP Tuners can do this.

Correct.

The alcohol sensor will adjust stoich as required and once it's reached the proper content the fuel trims will fall back in line just like before. It seems to take several miles on my truck with the settings I have to reach the new alcohol content.

I have an older E38 computer so the settings were very simple. I have not done anything with the E92 computers in the direct injected trucks, so there could be an extra step or two to enable everything in the tune file and make it work as if there was a sensor from the factory.

Thanks. I bought the CJ Tunes and got hosed for a sensor. Install will be easy but whatever. I am going to swap over to LT4 injectors and then re-tune. I already have the +32% on the cam lobe so we will see how long it takes to run out of fuel. I curious to how long the low side cant keep up?

FFDP

Can you explain how you spliced it into your existing fuel lines. I want to do this on my 6.2 but I know nothing about how to hook up hard fuel lines.

All I really did was disconnect the factory fuel line from the fuel rail, install the sensor in one side of that fuel line and bought a few fuel injection fittings/adapters and a piece of high pressure fuel line to connect back to the fuel rail.

My truck was a 2012 so it's going to different on a K2XX truck with direct injection. I am not exactly sure where the fuel line runs and where the best place would be to install the sensor.

DSX Tuning makes a plug and play kit with hard lines and connectors already. It's either buy that or copy what he does yourself for cheaper. His kit does make the power wire side of it easy, it uses a coil pack adapter harness if I remember right to steal a power/ground source. Then you wire it to the computer. The other option is to just wire to ground and wire to the fuse block with a add a circuit. Then create the fuel line fittings and line for the sensor.

https://dsxtuning.com/collections/fl...-2014-gm-truck

Thanks FFDP

I haven't seen the dsxtuning kit, I knew about the CJtunes E85 kit. Seems like they are all 300 bucks. But for the gains I guess that really isn't to bad.

Another option is to go with all factory fuel lines from a flex fuel truck. The parts below cost me $155. It takes a couple hrs to install since you are basically replacing all the fuel lines from the tank to the fuel rail. The hard fuel line that connects to the fuel rail (2317153) takes the most time.

Here are the pns from my 2016 6.2 8 spd. The 6 and 8 spd trans use a different hard fuel line (23171537 fit my 2016 8 spd) that goes from the flex fuel sensor to the fuel rail.

Sensor 13577429
Sensor Clip 20967866
fuel line 23171537
fuel line 23171538
fuel line 20967834
fuel line 23158923

I'd suggest checking with a dealer to verify pns for your year truck.

I'd imagine these are different for each cab style and bed length though, yes?

I would suspect a couple of the pns for the hard lines could be different based on the truck configuration. The pns I listed were for a 2016 crew cab, short bed, 6.2 w/ 8 spd trans and 4x4.

Better and cheaper to buy the GM parts. And it is a easy install.

Do i need any special tools to disconnect the factory fuel lines. I've never done anything like this before with fuel lines. So I"m not sure what I'm getting into.

It will be for a 2014 6.2 with the 6l80. So I guess I need to figure out what fuel line goes around that trans.

and is there any reason I can't do it this way on my 6.2 instead of replacing all the fuel lines