I have a stock civic radiator with a Permacool fan, when im at cruising speeds the temp gauge starts to rise, i turn on the heat to bring the temp down. Then, when im sitting still it doesnt over-heat at all.
Theres no air in the system, all other components are funtioning.

But my aem ems controls the radiator fan, could the box be the issue?

I just installed a PWR radiator & thermostat to try & solve my cooling issue.

 

Could be your fan is running in the wrong direction, which would push air the wrong way, or the fan is not powerful enough. Check your wiring, and is the fan kicking on at idle?

 

the fan is mounted the opposite direction as stock. yes, the fan does kick on while idling. Perma-cool told me that this fan is more than enough for my set-up.

Something like 1650 CFM's

 

The fan is spinning the wrong direction!

Your fan is moving the air this was <
When your sitting still it is fine

When you are moving the air is going > and the fan is going <

>< does not = >> hence the over heating...either put the fan on in the stock location or flip the power and ground to make it spin the opposite direction

This has nothing to do with CFM its physics 45 MPH wind >>>>> 30 mph wind <<<<<

Air wont move