Re: Tip on improving hp for free...
The hose from the stock airbox is the breather hose for your valve cover. Inside the air box, it has a filter on it. The other two hoses are your intake hoses. They are about 2" in diameter. I have never seen any baffles in these hoses. I am not sure what else you are refering to, but if it is the breather hose, it sure won't improve your horsepower. As for the K&N air filter, I have found that it will increase your top end horsepower, but reduces your low end torque. The Filtercharger does the same, but also increases the engine noise. I have exparamented a bunch and have found that the stock induction and exhaust gives me the best all-around setup. It is quiet, lots of torque, resonable horsepower, and gets good gas milage (10-16mpg)
93 bronco 351w