I understand there Erik and agree , on certain applications , maybe e-fans are not the best , but to generalize that all e-fans are not good for towing is a incorrect assumption . When dealing with e-fans CFM is key , there are a lot of e-fans that produce more CFMs than their mechanical counterparts , so a e-fan with greater or equal to CFMs can replace a mechanical fan with out any degradation to performance . So I hear !