Been driving it for a while and it's definitely noticable. It has more constant boost pressure from the turbo and up shifting is even better in the automatic. Throttle input is more responsive after a let off of the gas and it has a harder pull during gear change. Much more power kept after the upshift for quick throttle. Can confirm it's worth it.
Just ordered one myself for a 2019 GMC Terrain 2.0L with the LTG engine. Going to put it on while I wait for the November sale to pick up a tune. I'll update once I try it out.