Look buddy, im not trying to argue with you, I know you went all out for your build with big bucks. I spent 5k installed for the upgrade all in and my bike runs great loaded 2 up, up and down the mountains and down the interstate. Dont need builder opinions and online graphs to tell me different from what my butt tells me. This is from someone who has been in the saddle since 1974 and is pushing close to a million miles on 2 wheels. The guys asked a question and I answered as someone who has actually done what he was asking.
I’m not arguing with you I simply just asked a question if the stock air filter was good enough for what I was doing. I’m glad your 131 is humming along. There are a lot of opinions on here. Just have to take them with a grain of salt.
Well, the information Doc provided is Fact, not opinion. He is on of the top tuners in the country. He uses actual engine data.
No doubt Kojak's bike runs fine, feels fine. Makes plenty of power. No doubt very happy with it.
That said, a better air filter that flows more air it would make more HP and Torque.
Me, if I am putting 4K into a motor, I'm going to use an air filter that supports the most power possible.