PLUS... it looks cool!

 

Steven: Am I going to need a new file if I get these 2 things installed while running the Stage 4 GT (91)?

Mike

 

Yeah,

The intake plus the Red boost hose kit finally dresses up a rather boring looking engine!

 

Mike,
If that ended up being the case and adjustment was needed we would have you covered.

 

If i run the stage 4 programming, without headers, will the airbox give good results? Would you suggest something like this or am I better off going for the headers. I want less lag and more low end so what is your suggestion?

Lou

 

Cool.

 

A couple of points:

1) If the decklid seals the cone filter area from hot engine air, then the area is "closed". If the area is closed then it wouldn't make any difference if the area were closed by the decklid, or some other material.

2) It seems to me that the effect of the venturi in this EVO airbox is *lost* because of the greater area in the cone filter "box" post venturi. The air is accelarated *in* the venturi, but the area post venturi (the cone filter area) is larger than the venturi area, and therefore the air velocity slows back down.

 

Lou,
The box works well on the level 4. I will try to post dynos.

Dock,
No, because if you cover it you can not seal it properly and second it still has to be smaller. The box is the exact size it has to be. It can not be any larger as it would push up on the lid. Enclose it and you would have a very thin walled unit and it would still be smaller.

Regardless of the after thoughts the dynos are not lying. Does the box work? Heck yes we have dynos after dynos to prove it. The thing that is different than any other box is the venturi.

I have some friends that were over at the shop this week and happen to be engineers for ProCharger. When we look at the results I asked them could they believe that. They laughed and said, Uh yea Stephen half of our kits have venturi built into them. It works. Look at Porsche's cup cars...they too have them.

 

I don't doubt the validity of the dyno runs, I just wonder if it is because of any venturi effect. Based on what the airbox looks like from the pictures, the physics of the venturi are questionable since the air is being dumped into a larger area than the venturi.

As for enclosing the cone filter, there is no question it can be done correctly, with the resulting area being the same as the current one...I would guess though that it would be way more expensive to produce.

The EVO airbox seems like a real nice product that adds power, so my comments are with regard to the *why* it produces more power, and specifically the physics of the process.

 

I hear a loud sucking sound.

 

Stephen,

I have the GT2 wing with cut outs on both sides. From your pics it appears both boxes would collect outside air. What do you think?
Here are some current pics of what my set up looks like.



Note: The lid rubber gaskets seal both openings individually. The lid was built so the left intake feels left and the right intake feeds right. Hey, if you think the bumper is lightened, you ought to see what certain parts of the frame look like. Sorry but Rob won't allow me to post pics of that work.

Anyone spot the two rear nitrous purge vents in the second pic.

 

Hey man of course.. we can use mine as a template as I said

 

Alex,

I was just looking for Stephen's take on it also. I'll be taking you up on your offer in late June or early July.

 

The new system doesn't draw air from the outside. It is totally sealed except for the right side.

I would suspect that even with your setup the box is a good idea.

 

The way I see it the right side (EVO box) draws air as normal. The left side (EVO box) appears to seal on the lid, which if I'm correct (if I installed the EVO box) would seal on my second intake. Am I looking at it correctly?