this is a view from under the car of the duct tube as it come through the ridged panel and directs air onto the cone filter of my NISMO intake...

I think if this panel were removed, air would flow freely into the area where the cone filter of a NISMO or AEM filter sits.

PeteH

 

this is how the NISMO (and AEM) intake looks with the wheel well liner removed.... you can just barely make out the ridged panel (before I cut the hole) behind the cone filter...

I have wrapped the intake tubing with heat shielding to help keep the air going through from absorbing any heat from the brakes...

 

Makes me wonder what would happen if you had a duct running from the air inlet to the stock location. With K&N dropin in the stock location, it maybe close to an injen intake, maybe not, lol.

 

Thanks Audito350z. I see now.

 

To remove the separator panel between the wheel well and the grill area I used precise instruments: A pair of pliers and a lot or pulling, twisting, crunching, cracking. Eventually I got all the pieces out. :-)

And I still assert, as others have hinted here, that if the separator is removed, the intake in the wheelwell will still benefit from positive air pressure without any "scoops" or whatever, simply from the positive air pressure in the grill.

However, who knows? Who cares? I know it breaths better now, I know it sounds like sweet metalic music, and it looks good.

 

be careful when you remove alot of the paneling underneath the car.. it will mess with our zero lift coefficient and increase drag.. (air flow under the car is just as important as over it)

perhaps if you left the underside piece on there. but cut little vents UPward (the fold is front of the car, flaps curling up) you can draw some air into that chamber and attempt to get more air in there....

 

Perhaps he was referring to pressure drop enhancement. Throwing in a panel filter may enhance throttle responce by lowering the pressure drop without increasing peak airflow at the MAF. The ECU may have a programmed cap in the settings as to what max cfm it will richen to before 'correcting' (cutting power). It is a potentiality that CAIs add too much air than the parameters of the stock ECU can correct positively for, especially with stock injectors running near max of the duty cycles. Just a thought.

 

If we remove the panel will we have to worry about water getting to the filter?

Dan

 

yes... but your intake should have a bypass valve in it that will open up if the larger cone is in water

I can't imagine it would be any worse than an intake that puts the cone right behind the front grill.

 

So we should definitly have the value? Where is the best place to order these? I want to take the panel out but don't want the chance of hydro lock (I think that's what it is called). Think I seen them someplace for like $80.

Dan

 

Its a bypass valve. AEM sells them. Our cars are daily drivers, and the injen has been put to the test. It has been through some tough rain and no problems with the Z. But all plastics are in place so it is getting a lot of water "blockage".

Now if you run into a large, deep puddle then your SOL.

 

Found one at *** import for $44. Ordered.
Can the cone filter withstand the water or will it destroy it?

 

This .7psi is seen in the manifold @60~70 mph?

 

Yes it will but it will not stay pretty for very long.

 

The water bypass is only useful if your intake gets completely submerged in water. It will do nothing for small droplets of water entering the intake. It needs the weight of the incoming water in the submerged intake to cause the air to flow through the bypass.

As far as droplets of water on the filter causing problems, I've read that it isn't a big deal. I'm no expert, but I haven't had any problems in nine months with my AEM (only removed the divider a couple months ago, though).

 

I've run an Injen CAI for the last 4 years (last car and the Z) I have driven through numerous storms/downpours and never had a problem. The main thing is to avoid deep puddles/standing water.

 

Someone brought up a good point. If you remove the barrier between the area behind the grill and the area under the hood you are letting a LOT of air under the hood. This air must then EXIT the hood area, probably by coming out the bottom of the hood area. This creates lift.

My old camaro had this problem BAD. At speed over 100 mph it would float the like the goodyear blimp. The Z-29 from the same year had fender vents (above and behind the front tires) so I replaced my fenders with some vented Z-28 fenders. It made a LARGE difference. (well, I did that and a small rear spoler at the same time).

The lift problem was reduced. And you could sure feel the hot air coming out from those vents! It turns out those vents reduce lift AND help reduce heat build up. (heat was a problem as I was running a over-bored 350 4-bolt at nearly 10.5 to 1 compression. That thing made some HEAT)


Any... i digress.... I would be carefull letting too much air in to the hood compartment from the grilll area.

Just my $0.02

 

The only divider I removed was the one that separates the driver's-side area in front of the front wheel and the radiator, where my AEM CAI filter lives. I did not remove any dividers that would allow extra air into the engine area.