I love the guys that want "more filter area" from say... a "cone" filter, yes they have more area, but the original 2.9 filter element was the same size as the filter in the 225hp 5.0HO Mustangs.
Now, if that filter flowed enough air to feed a 5.0HO engine in what way was it "inadequate" to feed a 140hp 2.9 engine?
The same filter element size is used on the 4.0 trucks up to 1994.
In what way is a filter that'll feed a 160hp 4.0 inadequate to feed a 2.9?
I've seen people use the stock airbox (modified to flow in reverse)
with the VAM air meter of a 2.3Turbo.
I saw one guy with that setup do a dyno run that showed 270hp.
Ona STOCK 2.3/2.9/4.0 paper element.
The post above from 89REDRANGER has me near boiling point,
HE REMOVED the duct that fed air to the filter box and "likes"
his setup without it?
there's a word for that... let me see can I remember it?
Oh yeah... 89REDRANGER, Here's your sign!
that's as tactful as I'm willing to be on this topic.
ADDITIONALLY Removing the preheater stove from the exhaust manifold does NOTHING because it's controlled by a thermostat that cuts off the vacuum to the vacum pot that controls it, so it only actually does anything when the engine is cold and it speeds warmup I.E. (for the innumerable swarms of stupid people out there) it does nothing but HELP and does so by speeding engine warmup from a cold start.
I have a 4.0 with headers and yes, I installed my choke stove tube.
Someone I know created an airbox "spacer" by cutting the rim off the lid and base of an airbox the purpose of this was to allow him to "Stack" two air filters on top of each other, his primary purpose was to protect his turbocharger (a somewhat custom T3/4 hybred), but he realized that it would also serve as a demonstration platform.
So he BOUGHT (specific to his purpose) a K&N filter and installed it before the paper element.... to demonstrate how much crap the K&N DID NOT catch.
this is demonstrated by just how quickly the paper element, "protected"
by the K&N becomes filthy.
Oh, BTW, the reason my brother the Ford Senior Master Diesel
Tech LOVES K&N filter?
Because when he finds one in a truck it's an instant "Warrantee denied" which means he gets paid at a higher rate for the repair.
The difference is several dollars an hour.
My brother believes that every dollar spent on a K&N for a Ford with a diesel makes some lucky technician $2-$3.
AD