I redid my own intake a while ago on my NA 99' S70.

I got my car new so spending the extra money on the turbos was not an option at the time.

For those who want to add a better breathing system to their brick I plan on working on it a bit more for users who want 5-10+ hp for spending about $65 (on a filter, some tubing, and special tape) and 30-45 minutes of working on the intake. This is for those users who do not want to remove their air intake box (resale purposes, price, etc...) and add some extra hp for a cold air intake.
I do not know if this would work on 850s but it does on S70s. I assume it should work with 850s because the placement of components and frame around inside the engine seems to be the same as its younger brother the S70.

A major concern is water getting into the engine. I have had my intake the way it is for over 1 1/2 years now and no problems have occured from the intake being the way it is. You should have no problem as long as you dont spray a hose right into the right side of your grille facing it (left side if you are driving).

With this small system you can really feel the extra boost when you are on the highway in 40-60 degree temperatures when you punch it. It still works well with the other temps, but those seem to be the best so far. Much more air reaches your engine, but not too much to over do it.

If anyone is interested, I'll take out time to refine it a bit more and do some more research.

Toxic,
Put me down for you air intake mod. I would take a look at it to see if i can modify it to work on my C70.
Thanks.
Butchman

i wish i could get a metal pipe cold air intake on my S70. maybe have the pipe run under the car to the front lower right bumper or something. what can we do? what about that recirculation pipe thing

This one does not have to travel that far. It is actually kind of a pain to try and fit it to go under the bumber with all the wires and gizmos in the way, I would also worry about water, etc.. in high puddles.

The tubing is the kind used for laundry dryers, meaning it can take the heat of the engine and not melt like a plastic could. The tubing is fitted onto the existing plastic pipe that comes out of the airbox and is fitted on tightly with no air leaks with a metal tape.
The tubing is then gently pressed down and shimmyed between the plastic piece above the radiator and the piece below where the hood goes onto.

You're only removing a couple of the stock plastic pieces and lengthening your current pipe so it will reach right behind the grille and receive more air.

You may have seen things like this in Jap cars that have a missing headlight in the front, except that is illegal. This uses the same idea.
I am going to work on refining it a bit more and improving it. There is always room for improvement. Give me some time and I will work on it to improve it even more than what I currently have without chancing water getting into the engine.

I have thought of some new ways to test the airflow and air dynamics of it. I'll being this weekend.

Thanks for showing interest! I love doing new projects.

Did you do this for a glt or t5?

for what its worth, I can remember that on my old turbo Eagle Talon, the boost built up much quicker after going with a K&N. Point being that I think that easier air intake is especially valuable for turbocharged cars since it allows the turbo to spool faster.

I would vote for more info on your home made air intake!