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

[Rocket Man]

Thanks for supplying the provider.. I've looked at the other website before. This is something I'd like to do.

Will you photodocument the process. Seems easy enough. I can live vicariously through you for the time being

It will be in my build thread, link is at the bottom of my sig. Turn your phone sideways if you don’t see it. It’s the one for the bagged Silverado.

 

[R3cord303]

Anything with VVT, stock will benefit from higher octane fuel.

Anything with forced induction, stock, will benefit from higher octane fuel.

Anything at all being custom tuned will benefit from higher octane fuel.

 

[iamdub]

If you're filling up with good quality gas, it takes longer than a month for it to go bad/"stale". You can let good gas sit for 3-6 months without any issue at all.

I figured as much. But I swear I can feel a difference right away after refilling. I'm pretty in-tune with my Tahoe and can't convince myself that it's just in my mind. According to my friend, it's not that I had stale gas and now have fresh gas. It's that the PCM switched octane tables.

I asked him to give some specifics and/or validating links to info on this.

 

[iamdub]

Anything with VVT, stock will benefit from higher octane fuel.

Anything with forced induction, stock, will benefit from higher octane fuel.

Anything at all being custom tuned will benefit from higher octane fuel.

During hot weather, mine will detonate a little when I'm romping on it if I don't have 91-93 in it.

 

[R3cord303]

During hot weather, mine will detonate a little when I'm romping on it if I don't have 91-93 in it.

Heat soak? I’m thinking about insulating the tube and the manifold after I have my charge air resonator delete done

 

[swathdiver]

I figured as much. But I swear I can feel a difference right away after refilling. I'm pretty in-tune with my Tahoe and can't convince myself that it's just in my mind. According to my friend, it's not that I had stale gas and now have fresh gas. It's that the PCM switched octane tables.

I asked him to give some specifics and/or validating links to info on this.

Well, what is certain Chris is that as soon as the computer detects a refueling event, it starts trying to determine a new alcohol content. If you've ever looked at your fuel trims right after leaving the gas station, you're eyeballs will go wide as they can hit -25 for a few miles while it's sampling. So this will certainly make an engine have a little more pep in its step.

 

[trailblazer]

Once in my trucks lifetime moment:



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[wjburken]

Once in my trucks lifetime moment:



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Cool! I thought I was the only person who took pictures like this until I started hanging out on this forum. My wife just rolls her eyes and shrugs her shoulders at me.

Just think, in 530,865 miles you can get a picture with the numbers reversed!

 

[gooffeyguy]

Well, what is certain Chris is that as soon as the computer detects a refueling event, it starts trying to determine a new alcohol content. If you've ever looked at your fuel trims right after leaving the gas station, you're eyeballs will go wide as they can hit -25 for a few miles while it's sampling. So this will certainly make an engine have a little more pep in its step.

I was thinking the same thing

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[Rocket Man]

Ordered a hidden console sub box, 10” JL sub and amp to go along with the new dash, Esky cluster, console, carpet and Katzkin leather. I’m on a roll.