Air intake Question?

[AFBeefcake]

Which it better for performance?

Conical high flow air filter on the end of the MAF.
Or
Stock air box with high flow panel air filter and no air resonator.

[Landshark]

none of the above.
stock airbox (without resonator, if you like the sound) with stock filter.

high flow panel filters (K&N, etc) may allow more airflow initially, but i've heard the oil quickly gets saturated and the flow decreases. the oil also can screw up your MAF sensor (not cheap.)
i'd rather pay $5 once or twice a year and throw away the old paper filter, rather than pay $45-50 for filter, plus $15 for the oiling kit, clean it, dry it, oil it, wonder if there's too much oil on it (or not enough), is it screwing up the MAF? .......

i was on a forum for my old car and K&N filters consistantly DECREASED performance on the dyno VS. paper filters, but every car is different. at most, you'll get maybe 1-5hp? not worth the trouble IMHO.

a conical high flow air filter on the end of the MAF will DEFINITELY decrease performance as it sucks in hot air from the engine bay.

[SubaSteevo]

I believe that if you cut off the resonator so that the tube still extends into the fender you could put a conical filter on the end of that tube. Then the stock filter could be removed and you would have the conical filter instead, deep in the fender where little hot engine air would get to it. This might propose a problem with water however. Personally I like the stock setup w/resonator removed.

P.S. I may be 100% wrong, I'm just trying to use logic to come up with a possible solution.

[Landshark]

Originally posted by BurgundyBeast
I believe that if you cut off the resonator so that the tube still extends into the fender you could put a conical filter on the end of that tube. Then the stock filter could be removed and you would have the conical filter instead, deep in the fender where little hot engine air would get to it. This might propose a problem with water however. Personally I like the stock setup w/resonator removed.

P.S. I may be 100% wrong, I'm just trying to use logic to come up with a possible solution.

i don't think water would be a problem - if the water is that high you're gonna have bigger issues to deal with! would be a pain in the ass to remove the wheel and fender-liner to clean the filter everytime, though. again, you're going to spend the money and go through the aggravation for an extra 1-5hp, if you're lucky?

[elninoalex]

Originally posted by AFBeefcake
Which it better for performance?

Conical high flow air filter on the end of the MAF.
Or
Stock air box with high flow panel air filter and no air resonator.

All of the above. You can put anything you want in there, as long as you are not breathing hot air, and it will be about the same. The motor breathes just fine with the stock system. You can change the sound, but not the performance.

Stephen

[AFBeefcake]

well I put the stock system back into my car, but I cut the air resonator box off.

the sound is allmost the same and I can't feel any performance
difference.

but I can't find the bracke that holds the air box down.
any one have one I can buy or something.

I didnt read what anyone else said, but I have tried both, and the fully stock airbox with OE subaru filter, i have found, is the best solution for performance. I remember reading somewhere that the stock intake system outflows the engine by like 10 times.

Mike

[Landshark]

Originally posted by Green1995SVX
I remember reading somewhere that the stock intake system outflows the engine by like 10 times.

Mike

<Beavis>
over-engineered cars are cool!
</Beavis>

[Phil Hill]

As a very general and rough rule of thumb the intake system (be it carb or injection) needs to flow 2 to 2.5 cfm per potential HP from the engine. So it the intake flows something like 575cfm or better then the intake is not the problem.

Keeping the air cool is a good idea, the new Jag X-type (uses a derivative of the Ford Zetec V6) has an insulation "pillow" in the Vee between the block and the intake manifold. How about some heat reflecting insulation on the intake and some insulation between the deck of the motor and the intake, or is there too much cr@p in the way ??

[Phast SVX]

i have my cone filter in the fenderwell, and will be placing heat rap around the metal piping to my engine. There is NO WAY im getting worse flow, but who knows what im gaing(the sound at wot is absolutely incredible, and i have stock exhuast) I will take a movie of it if rob lets me use his camera sometime
phil

[alia176]

Phil,

I've thought about using a phenolic spacer between the intake and the block as a heat insulator. I haven't looked at the logistics of this but it sounded good in theory!

Also, my old 5.0 had a ram air thingie that helped suck in cooler air. Wonder if these can be retrofitted for the svxs?

Ali

[alia176]

Phil,

I've thought about using a phenolic spacer between the intake and the block as a heat insulator. I haven't looked at the logistics of this but it sounded good in theory!

Also, my old 5.0 had a ram air thingie that helped suck in cooler air. Wonder if these can be retrofitted for the svxs?

Ali

[AFBeefcake]

ok so oil in the air filter is bad.

any one know of a hi flow air filter that doesn't need to oiled to work.

[SubaSteevo]

If you wrap your intake system (stock OR aftermarket) in aluminum foil it will insulate it and you could gain some hp (I've seen real tests, real results). I dunno if an ugly aluminum foil intake would be worth 5hp though. Especially since you probably wouldn't even notice 5hp.

[chris92svxlsl]

I have owned my svx for a few months now and there seems to be nothing you can do to increase hp, except buy a NOS kit or pay 4,500 for a turbo. Are there any other options??