What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[swathdiver]

This adapter would rock if it had a pin so you wouldn't have to pull the core.

I ended up removing core, pushing on about a foot long piece of 3/8" fuel line running to a small cup and went and turned key on for a fraction of a second.

You don't have to remove the core.

As you screw it down it depresses the core. Just used it again tonight and had to re-energize the fuel rail once to get a few more drops to fill the beaker.

Torque App showed Alcohol Content as being 66.7% and the beaker sample taken from the rail was right at 80%. Time to break out the Tech-2 when I get gas tomorrow and reset the alcohol content.

 

[RooTBeeRthe1st]

Already received some of the parts to start getting rid of the virtual garbage sensor.

 

[Fless]

As you screw it down it depresses the core. Just used it again tonight and had to re-energize the fuel rail once to get a few more drops to fill the beaker.

Torque App showed Alcohol Content as being 66.7% and the beaker sample taken from the rail was right at 80%. Time to break out the Tech-2 when I get gas tomorrow and reset the alcohol content.View attachment 352445

Are you going to reset the alcohol content while you have that much ethanol in it? Filling up with E85?

 

[swathdiver]

Are you going to reset the alcohol content while you have that much ethanol in it? Filling up with E85?

No, we'll probably use the Tech-2 and pump all the remaining fuel in the tank into a jerry can and then put 5 gallons of 93 in it from another jerry can, top it off at the gas station and then reset it after it finishes calculating for the new fuel. I considered driving around but don't really want to risk running out of gas or leaving too much E85 aboard when I hit the gas station.

The idiot light comes on nowadays when I have about 5.5-6 gallons still on board. After it came on last night, I drove it 26 miles so that should cut that number in half. Hmm, let me do some math... Yeah, if I drove straight to the station the AC might still be about 8%. Enough to do the reset but think I can get it closer. Maybe I should just take the long way to the station and throw a jerry can in back just in case. Boy, I sure do over-think things these days!

 

[iamdub]

As you screw it down it depresses the core. Just used it again tonight and had to re-energize the fuel rail once to get a few more drops to fill the beaker.

Torque App showed Alcohol Content as being 66.7% and the beaker sample taken from the rail was right at 80%. Time to break out the Tech-2 when I get gas tomorrow and reset the alcohol content.View attachment 352445

Nice- you have the widemouth vial. Mine's the smaller black plastic cap version. Where did you score E80?

 

[iamdub]

Already received some of the parts to start getting rid of the virtual garbage sensor.

Part number or link?
Better yet, a write up?

 

[George B]

Part number or link?
Better yet, a write up?

I found this.

2013 Chevy Silverado 5.3 FlexFuel Modification - PerformanceTrucks.net Forums

FUEL SYSTEMS - 2013 Chevy Silverado 5.3 FlexFuel Modification - I have a 2013 SIlverado with factory flex fuel. It has 40000 miles on it. I have modded the suspension (coilovers, caltracs, etc) and misc other aspects of the truck. Along the way attempting to prep it, as I intend to supercharge...

www.performancetrucks.net

 

[iamdub]

I found this.

2013 Chevy Silverado 5.3 FlexFuel Modification - PerformanceTrucks.net Forums

FUEL SYSTEMS - 2013 Chevy Silverado 5.3 FlexFuel Modification - I have a 2013 SIlverado with factory flex fuel. It has 40000 miles on it. I have modded the suspension (coilovers, caltracs, etc) and misc other aspects of the truck. Along the way attempting to prep it, as I intend to supercharge...

www.performancetrucks.net

Bookmarked. Thanks!

 

[RooTBeeRthe1st]

Part number or link?
Better yet, a write up?

I could do it right up I suppose once I get everything and actually get it done.

But honestly, from what I've seen. If you're okay with spending the money, just get the kit from DSX tuning, and all you have to do is take the signal wire from the sensor and find the right pin out on the ECM connector to put it in. Go into the tune and change it from virtual sensor to physical sensor and your supposedly done.

If you're set up is good on the stock fuel pump and fuel lines, then that's the best way to go. I bought that flex fuel bypass block thing with an fittings just in case I can't make the power I want on stock stuff... Which is pretty likely considering I like corn so much.
So that'll probably end up going on down the road when I have the Whipple kit on there.

 

[RooTBeeRthe1st]

I found this.

2013 Chevy Silverado 5.3 FlexFuel Modification - PerformanceTrucks.net Forums

FUEL SYSTEMS - 2013 Chevy Silverado 5.3 FlexFuel Modification - I have a 2013 SIlverado with factory flex fuel. It has 40000 miles on it. I have modded the suspension (coilovers, caltracs, etc) and misc other aspects of the truck. Along the way attempting to prep it, as I intend to supercharge...

www.performancetrucks.net

I hadn't seen that particular post, but that's pretty much what I was planning to do.