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post #1 of (permalink) Old 02-03-2000, 02:42 PM
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Tip on improving hp for free...

If you own a fuel injected bronco, here is a little tip on how to get about 5 extra hp. Your stock airbox has a hoze that runs from it to the top of the engine compartment. This air hose has a baffle in it, reduces air flow and causes turbulance in the incoming air. Remove it and replace your stock pannel filter with a K&N filter. You will notice a difference in power for about $40.

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post #2 of (permalink) Old 02-03-2000, 05:38 PM
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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)

Curtis
93 bronco 351w
33"BFG KO
4" Rancho

post #3 of (permalink) Old 02-03-2000, 07:48 PM
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Re: Tip on improving hp for free...

It is the air inlet that the air from the outside travels through first before it reaches the air box. On this attachment is has a part number and says "baffle". It helps to keep the engine quieter but restricts air flow from the outside to the air box and creates turbulance because the hoze has ribbs on it. It is the retangular opening that is attached to the top of the grill in the very front of the engine compartment. As for the exhause, I had great improvements when I added headers, a high flow cat, a three chamber flowmaster, all 3" and single. I got rid of the front 2 into 1 cat and have a custom y-pipe. I ran my truck on a g-tech meter after each modification and ran .28 of a second faster with the exhaust and about .08 with the induction modification I performed. That translates into about 25 hp. I have also been averaging 1-3 mpg better per tank after these modifications. I have noticed perhaps a tiny loss of torque under 2000 rpm but the increase in power after 2500 more than makes up for it. The truck performes better at highway speeds and has more gusto when I go to the sand dunes.

Chris442
92 Bronco 5.0
7" lift, 35's

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post #4 of (permalink) Old 02-04-2000, 02:35 PM
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Re: Tip on improving hp for free...

you can also set your timing to 12-15*'s, just remember to set it back to 10* for the snife test...

post #5 of (permalink) Old 02-04-2000, 04:43 PM
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Re: Tip on improving hp for free...

true,I did that on my mustang and it did help, but you then need to run super unleaded gas. These gas guzzeling machines would get too expensive.

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