Quote:
Originally Posted by SSLance
I remember watching a Harley on a mobile dyno many years ago up at the local Harley plant during a show. They ran the bike with no air cleaner, then put a K&N setup on it and it made considerably more power with the filter on.
That was the first time I really started to understand airflow and power. Was kind of surprised to see this much change with my air cleaner on, but we backed it up with another pull and it was plain as day different.
You are right, I'm glad we tested it. Just imagine if we had leaned out the secondaries to max power with it off, then ran it with it on...  |
Depending on how close the air filter is to hood, things could change again. I've seen cars on a chassis roll lose as much as 30 hp with the hood closed vs open when the filter is too close to the hood.