Warlockk

The wierd leak was on the main intake tube just after the MAF sensor. It was a Chrome tube and had a BBK plate riveted to it. Vacuum was pulling unmetered air through the rivets. It was also leaking around the silicone joints between the tubes and the MAF assembly. This was an older car that a student had picked up cheap so it has its share of problems but this one was unexpected. Obviously makers of these products consider their market to be ricers who are more concerned with image than quality and function so check those fittings.

4x4WSO

Has anyone done a warm or cold air intake on a 5.8 and what if any impact did it have?

unit505

I did the warm air on a '94 5.8 about a week ago. My buddy's truck. He says he has seen about a 1-2mpg gain this past week keeping his foot out of it. He said it seems to have a little better throttle response. overall, after one week, he really likes it. He went with the K&N RF1012.

lcrenshaw

New to my 1995 F150 got it with fair body condition IL 6 and all for a whoppin 300 bucks and some labor trade. I love this truck......mpg are killin me i was told cold air intake would help is this accurate info it has dual air hoses and i ahve done a complete tune up to no avail still about 8-10 mpg......my wife is killin me over it cuz its a work truck and i work lots.....pleaz advise.....help.

fordtrucknut

when I wired my e-fan I went the simple one wire one switch route.

1. because i wanted to be able to shut the fan off when in the deep mud and water
2. it simplified my already congested under hood room.

Only thing is you have to buy a special 30 or 50 amp toggle switch cant remember off the top of my head.

ALSO you have to remember to turn on the fan once the engine warms up a little.

Warlockk

Well to start with the factory intake is a cold air intake. Most aftermarket kits are actually warm air intakes that take warmer air from under the hood. Usually they are less restrictive. The factory setup draws cooler air from the radiator opening. But the filter and box don't flow as much air. A k&n or similar drop in filter increases the flow somewhat. Cooler air is more dense and provides a more efficient burn providing more power. There is also a k&n kit that uses a high flow cone filter and retains the factory cold air scoop. That setup while the most expensive claims the highest gains on k&n's website. Now I recommend using the search function for cold air or warm air intakes on this site. We have had several people who have done a lot if research providing information for both sides of the discussion. One side says high flow warm air provides better MPG. The other says that outside air is colder and provides better power and more power means less throttle required saving fuel. We posted a ton of information and I think its only fair to let everyone decide or experiment for themselves.
As far as mpg goes again do a search. A lot has been posted on that subject. Generally other the the intake recommendations are changing wheel and tire size, gear ratios, general tune up, timing bump, cooler thermostat, e fans, and free flowing exhaust. One guaranteed way to save mpg is to lighten the load.

oldcelicaracer

Well if your 49 is getting that kind of mpg a cold air is the last thing u need,do a bumper to bumper tune up on it,change every thing,plugs wires cap rotor fuel filter,all the fluids in the trans axles and t case if its 4wd,after that I will recommend pulling the upper manifold off and get a throttle body from a 5.0,(the 5.8 is the same size and 460ci are totally different)u can use the tbody gasket as a template to transfer the lines to bore the holes out,going with the 5.0 tbody with any various types of cold air will increase the flow ,u can only bring in enough air to what the most restricted part is,I would get some 4'' PVC pipe,find the 2 to 1 intake piece from a 93 1/2 up automatic f150 and run it where u want it to go,I did one on mine along time ago and ran it behind my bumper(my bumper has the cut outs in it)wit a coffee can I cut up to act like a shield to force more air in the filter,it made a big difference,a hardware store will have the 4 to 3 adapter u will need,this won't look pretty but it sounds great and works good,

tpries

Thanks for your post, i replaced the stock air intake on my 89 f150, out of necessity, due to the plastics falling apart and rodent problem, fits perfectly and sounds nice when throttle opened up

thlinks

Does anyone have a diy on an aftermarket intake? Was thinking of buying spectre filter

Truck_Enthusiast_11

Unit505 I know your post is rather old but did by any chance make a heat shield for your air intake?