look of the CF air guide. The air guide actual traps the air and helps force more air through the radiator while the car is in motion increasing cooling efficiency. Normally air rolls up and over the radiator instead of through it. I noticed a 2% decrease in temperature (measured on my Techtom). I know its not a lot but every little bit helps. Most just love the cosmetics as it covers an area of the Z's engine bay that isn't very attractive.
