Has anyone here built a enclosure for thier K&N that just seals it to the fresh (cool) air intake hole in the fender? Would this not make a significant decrease in air temperature to the intake manifold? Seems to me, yes.
But, by doing this, would the available amount of air getting to the filter be constricted enough to hender the performance we sought when we installed a CAI?
I asked this in a previous thread, but realized this was taking away from the subject matter. Hope to get more of you to respond here.
colder air is definately better but.... i did the math a couple of months ago. found the formula from an engine tuning calculator. (ambient temp, altitude, barometric pressure, etc) every 10* was worth about a 1% horse power change (not what i expected). compare that to a restrictive (only stock cai) it's possible add-on intakes breathe better (larger less restrictive piping). i know or felt an increase in power and throttle responce when i removed the secondary air filter. every little bit helps, but without a dyno, who knows how much....
waiting for the urd cai results, mostly because it's less restrictive w/less under hood piping. and, no air-box under the hood like the trd to heat up and rob cold temps.... add to that, these small changes do little without tuning (maf calculator). you can get between 5 and 15hp on a stock vehicle with tuning alone.... adding aftermarket stuff, intake and exhaust needs tuning to see their full potential.
"The factory intake is a CAI, the aftermarket intake that isn't sealed is not. A sealed intake is definitely better for getting cold air in."
True? I hadn't thought this way.
"waiting for the urd cai results, mostly because it's less restrictive w/less under hood piping. and, no air-box under the hood like the trd to heat up and rob cold temps...."
I must be mixing this up with ??? as I thought the URD's consisted of more piping; to pull the cooler air from in front of the radiator.
" add to that, these small changes do little without tuning (maf calculator). you can get between 5 and 15hp on a stock vehicle with tuning alone.... adding aftermarket stuff, intake and exhaust needs tuning to see their full potential."
Boy I'd like to get mine tuned, just unsure on buying that tool for myself. Anybody here in the Phoenix that can help?
The factory intake is a CAI, the aftermarket intake that isn't sealed is not. A sealed intake is definitely better for getting cold air in.
Anyone with a scangauge and unsealed K&N have any info on intake air temperature?
My stock intake is usually 3-5 degrees higher than ambient.
I have both. I keep meaning to get a chart together. Comparing speed, ambient temp, intake temp and engine temp.
Now that it's cooler, the intake temp is maybe 5 degrees off the ambient temp while driving. At idle it's slightly higher, which is to be expected.
In the summer, at idle, the intake temp would reach as much as 20 degrees higher than ambient. Driving, between 7-10 degrees higher on average. That's with the air temp around 85 F.
From what I've seen, the intake temp exponentially increases as the ambient temp increases.
Like yrffej pointed out, the temperature change by a few degrees is negliable on engine performance. Like I've posted before, too much emphasis is placed on the "cold air" designation of these intakes.
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2005 V6 4x4 Silver Access Cab, K&N/AEM Hybrid Intake, GC + 3oz. ARx, K&N HP-2009
265/70/17 Nitto Terra Grapplers, Black KMC XD Enduro Wheels, TRD Exhaust, URD Short Shifter
"Anyone with a scangauge and unsealed K&N have any info on intake air temperature?"
I'm thinking that here in the desert this ambient to intake difference could be even more extreme, thus cooling it down more beneficial, albeit just a little.
I must be mixing this up with ??? as I thought the URD's consisted of more piping; to pull the cooler air from in front of the radiator.
true... but less underhood piping to heat up. it's not released yet, because it doesn't get air from the stock wheel well location. it could have less piping and the shortest under hood flow path (where all the heat is).
don't believe that they will as the scoop is a low pressure zone.
Probably right, but still the idea of drawing 'just' cool air is there.
I'm no good at inventing things, but it seems to me that a plastic 'box' to encase the K&N filter should not be to difficult to fabricate for those of you that have this talent.
It might mount to the fender area at the same locations the heatshield does now with some sort of standoff.
It also might incorporate the OEM conection to seal it to the fender air opening.
To expand on this mod, the interior of the box might even get a insulator so the incoming cooler air has less heated (from the engine bay) surface to make contact with.
don't believe that they will as the scoop is a low pressure zone.
i love this.... do ya' think the fenderwell is a high pressure zone?
the scoop is foward facing just as the radiator (where urd said there gonna put their intake)...
but, short of forced induction, normilly aspirated intrakes will suck all the air they need without starvation. there is no "ram air" they just suck air..... the benefit to using the scoop (once someone gets it togeather) is a shorter underhood cooler air path.... some mustangs and others use it.
i can only speculate why urd didn't choose to use the scoop for two reasons. one, fabricating a fit from the scoop to the intake manifold won't be the easiest path to build. two, the number of potential customers would be limited to those with scoops..... why design two units? when those with a scoop could use what they've already said about the "in front of radiator intake".
i have no doubt at all, the scoop intake would perform better. for a number of reasons.....
I think I saw a car last weekend at a local show that had its air filter/intake built into the hood scoop. I remember thinking that would have to be some pricey engineering to make that sealed to the intake runners (V8) 'everytime' you closed the hood. It was a clean setup, but...
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2005 Impulse Red 4x2 Access cab 2.7L 5-speed SR5.
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