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

Today I enjoyed the fruits of our labor, trouble free, smooth as Cadillac driving!

Burning Chevron 93, fixed the intake and throttle body leaks, riding on Michelin Defenders, she's getting 21+ MPG @ 70 depending on the wind, sometimes 23-24 @ 65 mph! It's never been this good!

swathdiver said:

That's going to be fun! Going to make before and after runs at a drag strip or phone app to measure performance? So many guys buy these cams just for the lope.

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Yeah, I've got an 1/8th mi I want to hit up, and a draggy, record some logs on HPT, and probably dyno just because curiosity.
Then repeat after I do all these parts.
Then throw the Whipple on and do it all again.
...then maybe fuel system and smaller pulley.


Edit

And of course a larger throttle body and potentially headers

swathdiver said:

Today I enjoyed the fruits of our labor, trouble free, smooth as Cadillac driving!

Burning Chevron 93, fixed the intake and throttle body leaks, riding on Michelin Defenders, she's getting 21+ MPG @ 70 depending on the wind, sometimes 23-24 @ 65 mph! It's never been this good!

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Great job! You're getting my mileage but in a big body, stock height (or lifted?) 4WD!

RooTBeeRthe1st said:

Yeah, I've got an 1/8th mi I want to hit up, and a draggy, record some logs on hot, and probably dyno just because curiosity.
Then repeat after I do all these parts.
Then throw the Whipple on and do it all again.
...then maybe fuel system and smaller pulley.

Click to expand...

Try to minimize variables and record as much data as possible- ambient temp and humidity, wind direction and speed, set your tire pressures to something specific, fuel tank level, engine coolant temp, IAT (if possible), A/C on or off, etc.

iamdub said:

Great job! You're getting my mileage but in a big body, stock height (or lifted?) 4WD!

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Still stock, decided against the leveling strut spacers due to our medical issues.

My Timken Front Wheel Hub Bearings arrived. Install is next week....

avalonandl said:

My Timken Front Wheel Hub Bearings arrived. Install is next week....

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Good choice.

I have an Edge CTS Monitor I used in my 2015 Silverado Duramax. It is an 83830 and I was trying to find out if it would work in the Denali. Its only a gauge NOT a Tuner....

avalonandl said:

I have an Edge CTS Monitor I used in my 2015 Silverado Duramax. It is an 83830 and I was trying to find out if it would work in the Denali. Its only a gauge NOT a Tuner....

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Their website says it works with any 1996-up vehicle with OBDII. So yes it should.

swathdiver said:

Today I enjoyed the fruits of our labor, trouble free, smooth as Cadillac driving!

Burning Chevron 93, fixed the intake and throttle body leaks, riding on Michelin Defenders, she's getting 21+ MPG @ 70 depending on the wind, sometimes 23-24 @ 65 mph! It's never been this good!

Click to expand...

So when you guys talk about the mpg you're getting, are you just bringing up the instant economy screen on the DIC (the one that pretty much constantly fluctuates from like 5 to 100 depending on if you're accelerating or coasting) and just taking the reading while cruising at a certain speed, or resetting the average economy and waiting a few miles for it to settle down?

I've only reset that once on mine. Right after I got it almost 4 years ago (it said 14.2). It currently, and has been for the past couple years, reading 12.something.

When I reset it, it read pretty high at first, actually for a couple days, up near 20 and the upper teens. Then eventually settle down lower in the 14-16 range, then after a few more days and driving mostly around town goes to the 12-13 range.