Blowing air into case is not increasing the airflow though your cooler. What it is doing is lowering the temperature of air going into cooler. Why are you doing negative airflow? I always go positive airflow with filters on on all intakes. Less dust problems. The ambient at case intake will generally be the same as room ambient. The temperature at cooler intake is what is usually different. Often much different.
8/1/14 at 2:11pm