Replacement air filter

[Snakebitten]

Non-EV mode (since we don't have a button for disabling it) like Tow Haul or Sport, will get you through that fast traffic turn.

I know it's a fuss, but this thing will JUMP off the line. Especially if you hold the traction control button down for a while. ?

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[Atlee]

It most certainly IS, in a way.
In my opinion, the Powerboost offers too many ways to skin the cat when you present a torque request that is right at the threshold of keeping or removing electric torque off the table.

The trick is to stay far enough below that threshold, or go over it altogether.

There's a technique that if it's practiced for just a few minutes, it works 99% of the time and it does a remarkable job of removing that stumble from electric/ICE & skipping 2nd gear.
In fact, if you focus on JUST getting the truck to use second gear, the electric/ICE transition doesn't even come into the equation.

Go to some large vacant area where you can repeat 0-25mph over and over unimpeded.
Come to a complete stop. Since it's a Powerboost, that's an ICE-off condition in Driver Select Normal Mode.

Imagine taking off at a green light, but you are going to accelerate at a rate that lights ICE, but not fast enough to bump into the car that might be in front of you.
So what you are practicing is being as smooooth as possible with the throttle, but aggressive enough to NOT be EV.

The second thing you are practicing is that you are NOT letting up on increasing the throttle until you see the tranny hit second gear. If it skips second gear, you stopped increasing throttle. You must continue to increase throttle at least until the tranny shifts into 2nd.

For early success, be aggressive enough at accelerating that it's easy to not be EV, nor skip second.
Then keep reducing the rate at which you are increasing throttle.
Within a few tries I believe you will find out that you can very smoooothly leave a traffic stop and not experience the EV stumble, nor skip second gear, yet not be driving aggressive in the least.

If you get good at it, the whole drivability of the Powerboost feels much more refined. Polished even. And you might even feel different about the 10r80 altogether.

There have been times when in extreme stop and go traffic, I have succumbed to just putting it in Tow/Haul mode. ICE stays on, and it shifts smooth as silk.