cold air intake systems

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Jan 18, 2006 | 12:18 PM

i1dery

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From: covington wa.

cold air intake systems

I have a 460 with efi, if i were to put a cold air intake system on it would i have to change the mass air flow sensor and the throttle body to make it work
properly? Or would the computer automatically sense the change in air volume
and compensate for it?

Jan 18, 2006 | 02:53 PM

02FordFx4

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What year truck is it, if it is 1994 and up then it is mass air flow, if it is 1993 and down then it is speed density and will not compensate for the increased volume. Even if do all of those things you just listed it won't effect the engine performance much if you have a speed density engine.

Jan 18, 2006 | 03:04 PM

whiteyfordzx5

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most intakes don't require any sort of modifications to the MAF. you'd have to be pushing a LOT more air than you would be with an intake (like turbo or supercharger) to flip out the MAF.

Mike

Jan 18, 2006 | 03:30 PM

i1dery

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From: covington wa.

Its an 89' f250

Jan 18, 2006 | 03:45 PM

whiteyfordzx5

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then you have speed density and can pretty much do whatever you want. but, be prepared to accept that 02FordFx4 is right. with speed density, you'll see minimal gains. i have an 89 F250 with a 351. right now i have the FIPK on there. i couldn't honestly tell you it made a difference except that the truck is now louder at WOT (which is enough for me) and that it seems to make its way up hills a little easier.

Mike

Apr 25, 2006 | 03:41 AM

harjp1959

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From: Scottsdale, AZ

Quote:

Originally Posted by 02FordFx4

My '95 F250 351 has the two tubes running from the airbox to the throttle body, so I'm thinking it's speed density, right?

Quote:

Originally Posted by whiteyfordzx5

I just ordered the K&N FIPK, but after reading this, it sounds like I should cancel the order. I'd hate to drop $250+ and (a) not notice any performance gain and (b) be cleaning my fancy new filter which isn't doing me any good all the time.

Thinking I was going to swap out the airbox tomorrow, I disconnected the air intake vent that sits just behind the grill and under the hood, and left the 3" (?) tube that draws the air into the airbox/air filter wide open. That alone creatd a noticeable, if small, performance gain.

Is there a high flow filter for the airbox I should consider?

Last edited by harjp1959; Apr 25, 2006 at 03:44 AM.

Apr 25, 2006 | 04:29 AM

TexasGuy001

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K&N makes a drop in replacement filter. I have one. It was about 40 bucks. I like it better than the FIPK, because it doesn't get wet or nearly as dirty. The only time I would think the FIPK might be beneficial is if you have other major engine upgrades.