Ok we have all agreed that running without a dyno fan is not recommended, professional tuners should know better that the fan is there for a reason, especially the heat generated from the manifold when the car is on a dyno, a fan is also used to imitate airflow as well as cooling,yes, it definitely doesn't justify the car's true power, I too am at an absolute loss why it wasn't use...

On another note , let's all end the dyno fan talk and stick to the E-Manage talk.