Just my opinion: I have no doubts that the Ramair filter will outperform the 2780's in every way. However, I would not be surprised if the factory filter set up out performs the Ramair in low end torque. The long runners in the factory set up are designed just for that. The bad thing is that those long runners then choke the engine as RPM increases. It is quite likely that the inlet nech radius of the Ramair will retain most of the low end performance that is lodt with the 2780's.
As someone pointed out earlier, the Ramair is made for our bikes, that is a big plus to me.
