It depends. If you are just going to run a blower to it, probably , yes. I've never been able to tell any real difference between uncooled, forced air and just leaving the shield up. However, if you run in the serious heat of summer, you may want a cool suit and cool air. Then it is absolutely what you want to do. For me after a race, it means the difference between lying down in the shade, wrapped in wet towels and walking around like nothing happened. Of course, I'm in SEDiv, so YMMV in Nu Yawk. (I'm also not the sveltest driver either.) Just remember, you get very little circulation in a closed car, particularly compared to an SRF.