Quote:
Originally Posted by blowncopcar
I too have a question regarding this but my fan is electric... My lower grille is blocked top and 65% on the bottom but I still run the a/c.... Is the aero gains not worth the extra power that the fan and also the condenser are taking? When I switch my a/c on I lose at least half my horsepower and no, I'm not kidding. Should I open the bottom grille more for better fe?
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I'm sure the correct answer varies from person to person. My car runs the cooling fan whenever the AC is in use, so I doubt heavy blocking affects performance much. If you see your engine coolant temps running much hotter than they are without the block, then too much blocking is being used. My car used to run 185 temps, and now run 190. Seems to be the perfect amount of blocking.