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

[iamdub]

There's no computing required with the physical sensor, as soon as it gets in the fuel line/sensor it jumps to whatever it's actually seeing.

Thanks for that. I assumed it did it in cycles because there's still a "Fuel Composition Learn: Active/Inactive". I know learning is active after it sees at least a three gallon increase in the fuel tank and I was told that it takes at least seven miles for it to get settled, or decently close. As for what parameters/events trigger the learning after that, I have no clue.

 

[iamdub]

What was the % of the sample you took?

It takes almost 24 hours to finish separating in the tube. So, I just checked it when I read your post...





The line is fuzzy. But, if it were the meniscus, it'd be just under 65%, like 62% to 63%. The sensor settled at 62% yesterday, so, I think it's doing great! It's only my second time testing it, but it was pretty much the same last time- within 2% of the water test. Due to the variables involved and the fact that it is consistent with reading that 2% differential, I'm gonna say it's pretty damned accurate. It's WAY better than the virtual sensor consistently calculating as much as ~30% low. Yeah, some new and different oxygen sensors might would've helped that. But, I did the physical sensor conversion for much less and I'm convinced my 23K-mile "wrong" O2 sensors are perfectly fine for their regular fueling duties.


Speaking of fueling, I'm gonna call this load E64. I was averaging 18 MPG on my test course yesterday. If E85 is 27% "weaker" than E0, then this E64 should only be 20% weaker than E0. Meaning, I should have a 20% drop in MPG from my norm with all other factors the same. My norm on E10 (I never bother with E0) is 22MPG at 70MPH. Drop that MPG by 20% and I'm at 17.6MPG. Considering that's actually E10 and not E0 I'm comparing to the E64, it's scaled down a tiny hair. So, it all checks out beautifully.


֎֎BONUS ROUND֍֍

If you wanna compare costs: 93 (E10, but actual % unknown) from that same station was $3.65 at the time of fueling. To break even with the reduction in MPG on E64, the price of the E64 would have to be 20% lower. At $2.55, it's 30% lower. More power at a lower cost = win.

 

[iamdub]

Preach it brother. I doubt I'll ever drive through that state again, unless it's to come see you

I wouldn't subject you to that. I'd happily meet you at the Arkansas line at least. Coincidentally, I'm headed to Bastrop tomorrow. It's about 40 minutes NNE of Monroe.

 

[89Suburban]

It takes almost 24 hours to finish separating in the tube. So, I just checked it when I read your post...

View attachment 401234



The line is fuzzy. But, if it were the meniscus, it'd be just under 65%, like 62% to 63%. The sensor settled at 62% yesterday, so, I think it's doing great! It's only my second time testing it, but it was pretty much the same last time- within 2% of the water test. Due to the variables involved and the fact that it is consistent with reading that 2% differential, I'm gonna say it's pretty damned accurate. It's WAY better than the virtual sensor consistently calculating as high as ~30% low. Yeah, some new and different oxygen sensors might would've helped that. But, I did the physical sensor conversion for much less and I'm convinced my 23K-mile "wrong" O2 sensors are perfectly fine for their regular fueling duties.


Speaking of fueling, I'm gonna call this load E64. I was averaging 18 MPG on my test course yesterday. If E85 is 27% "weaker" than E0, then this E64 should only be 20% weaker than E0. Meaning, I should have a 20% drop in MPG from my norm with all other factors the same. My norm on E10 (I never bother with E0) is 22MPG at 70MPH. Drop that MPG by 20% and I'm at 17.6MPG. Considering that's actually E10 and not E0 I'm comparing to the E64, it's scaled down a tiny hair. So, it all checks out beautifully.


֎֎BONUS ROUND֍֍

If you wanna compare costs: 93 (E10, but actual % unknown) from that same station was $3.65 at the time of fueling. To break even with the reduction in MPG on E64, the price of the E64 would have to be 20% lower. At $2.55, it's 30% lower. More power at a lower cost = win.

 

[RooTBeeRthe1st]

Thanks for that. I assumed it did it in cycles because there's still a "Fuel Composition Learn: Active/Inactive". I know learning is active after it sees at least a three gallon increase in the fuel tank and I was told that it takes at least seven miles for it to get settled, or decently close. As for what parameters/events trigger the learning after that, I have no clue.

Yeah, that's for the virtual sensor algorithm stuff whatever GM came up with.
The physical sensor (if it's properly set up) continuously reads the content when the ignition is on.

 

[the_tool_man]

haha read the first part like have you even been to FL? hot sticky and mosquito is the state bird lol.

you got me with snow thou, it last snowed in like 76 or there. if it snowed today the entire soft population would just drop.

speaking of mosquitoes. did you know they actually kill live stock in Louisiana? like suck their blood till it kills them. I think it only really gets bad after big storms and they get behind on spraying for them and stuff. but yeah as a Florida kid, that's the stuff of nightmares

I've visited FL plenty of times. The thing that sticks out to me is the drivers. If the most hesitant, timid driver is a 1, and the most aggressive driver is a 10, most places have mostly 4-6's with fewer at either extreme. FL is all 1's and 10's. I assume this is because the majority are either retired or they're tourists.

 

[Fubar0715]

Thanks for the tips! Any and all are appreciated. Since we travel with a firearm, I'm not sure how that works to cross into Canada. I had planned on driving over for the day and coming back to the hotel where we would leave our belongings. If I'm incorrect about the pistola thing, I'm all ears.

We're just digging into this thing so if there ANY must sees, let me know. We aren't avid hikers by any means but aren't incapable of doing some. Photo opportunities are a priority as well. We'll prob be there a total of 3 days. It's a long drive. We could fly but we love a good road trip.

Also, we're shooting for a trip in May. It seems the last few times we've gone out west, it's been late in the year and the fires/smoke have been really bad. I'm wanting to get out there as early as possible to hopefully avoid that

Banff is another beautiful place to visit - feels like a village in Europe. There is a National (whatever the hell it's called in Canuckistan) park as well. Going to the Sun road is wonder drive in Glacier Park also...

 

[jared999]

what's the goal of the kit? better ride?

It's not a kit. i.e. an aftermarket kit with bags something.

Yes, for a better ride. I was in a friends tahoe that had it and it was a lot more comfortable. : )

 

[Fless]

Yeah, that's for the virtual sensor algorithm stuff whatever GM came up with.
The physical sensor (if it's properly set up) continuously reads the content when the ignition is on.

I was going to say that, too. Mine (with the physical sensor) updates within a mile or two.

 

[jared999]

so I'm still curious.. was there an option for air bag front springs?

No, there wasn't.
When I bought this Tahoe, someone had taken off the autoride suspension components (RPO Z55). I'm converting it back to stock.