Where do you install it ya?
I've mine installed in screen cool

Not sure how to comment on the car tint, but my car cools down pretty quickly upon starting the car.
Though I can still feel a bit of heat from the sunlight.

Claimed to be IRR 90, uv400, costs rm900 for my B segment sedan car. Not sure which model is it, as it doesn't belong to the high end one which costs above rm1.5k