Has anyone dynoed one of these? They're claiming 23 hp and 27 tq with no tuning. Sounds too good to be true.
https://www.cjponyparts.com/holley-cold-air-intake-kit-intech-gt-2015-2017/p/CAK222/
When I took mine in for the drive train vibration they road force balanced the tires and found 3 that were bad. This helped noticeably but I still have the minor drive shaft shake.
My experience has been that the "back and forth motion" is a tire issue. A straight vibration/rumble in the steering wheel is from the drive line and probably the drive shaft. This is usually accompanied by a vibration in my butt (from external sources) and the rear view mirror shakes.