Engine vibration at idle 2018 4x4 offroad

When sitting in drive for about 10 to 20 seconds it starts to mildly shake the whole truck. The problem is also intermittent and both times I've brought it to the dealership it won't reproduce. It's been doing this since about 200 miles and at 12000 now. It seems to be getting more frequent so I will probably try to take it in again.
Maf readings sometimes drop into the 2s and bank 1 fuel trim sometimes goes to -7 whereas bank 2 usually stays close to 0. Let me know if there's any other pertinent info. Any help is much appreciated!

 

how violent are you talking?

sitting at a red light in my 2017 I can feel some vibration from the idle

 

Stronger than it should be, it is pretty annoying. It's a fast vibration that's noticeably different from when I first reach idle.

 

Like when the AC compressor kicks on? That's when mine does it.

I'll need to check, but that's always what I thought was happening.

 

It does it with the AC on or off

 

Mine does this too, 1800 miles on it. When I park it feels like its idling up, but its not.

 

Welcome to owning a Tacoma. Every one of the 7 I've owned since 1995 have done it.

 

Not sure I can deal with that.
When I slightly push the gas to bring the RPM from 600 to around 800 it goes away.

Can they adjust the computer to make it idle higher?

 

The OVTune helps immensely.

 

Lol sweet job you have there.
Does it void warranty? Does Toyota offer one also?

 

Does not void warranty and you can flash to stock anytime you like. Toyota does not offer any tunes.