I was thinking about this last night. There is a flaw with GAB , it still draws warm air from the engine bay. My concept was this, you get your K&N panel filter, place it in as such, don't worry about cutting a hole in the top of the air box.Leave it as is.....

The extra tubing that comes off the main pipe, you disconect the diffrent silencer and baffles but the holes that is left you tape up with some high endurance electrical tape to match the black piping. Now what is left is a pipe that constantly recieves cool air from the little scoop in front of the engine bay.
This way you have direct air flow from the front of the car to the filter without sucking no engine heat. It will be louder , but you should get some gains from it to... I am going to try this over the weekend.

 

The problem with stock air intake is that its too restrictive. GAB makes it less restrictive by opening up an extra hole. What you are trying to do is plug up an existing hole, making it even more restrictive. How that is suppose to give you any gains is a mystery to me.

 

wont work.
you get VERY minumal air into that scoop

 

Yes and no, Nissan engineers must have known what they were doing, because the stock air box gives a good balance on low and top end. With some CAI setups , you either get llow end punch or top end punch. Nothing in between. I will try a setup with both, i will do the setup with the hanger and one were you slide the tray over the hold w/the filter in place....

Just because the slot where air is drawn in from the stock set is slim , that doesn't make it a bad thing. You still recieve a controlled amount of air, and air that is cool. We all seen how many of us have blown MAF because of using CAI intakes. Bigger doesn't meen always better.

 

I've got something like this on my web page. I cut open the intake runner into the OEM air box and added a PVC elbow with a rubber adapter on the bottom. This added a lot of high rpm pull with a very minimal loss of low end torque. IMHO, this is much better than cutting the air box open. Also, I am using a standard paper filter (I don't think aftermarket high flow filters actually do a good job of filtering, but that's another story). I also tried creating a long CAI tube out of PVC that ran to behind the passenger headlight, but it did not perform nearly as well. PICS of both setups are on my hompage.

 

Doesn't PVC heat up in the engine bay and then that PVC vapor and other crap go into your engine? Thats probably not good. Better spend a little more money and use a thermoresistant plastic.

 

or exhaust piping....

 

or wrap the PVC pipe with exhaust wrap

 

I only had the long PVC duct in the bay for a short time and there were no signs of melting or other damage. In regard to putting some type of heat tape around the PVC, I'd considered doing that for the long run, but there simply was not enough room. The elbow currently in place has been just fine for about 10K. i doubt I'll have any problems since it's not near the exhaust manifold.

 

I would not necesseraly melt, rather evaporate slowly into the intake.

 

The stock airbox is great already...its quiet. Aftermarket intakes don't add much of anything to the VQ30's

 

Gutter Baby ... Check the site

 

That looks interesting and disturbing like a colostomy bag at the same time. But I was wondering if its possible to stick that pipe somewhere in the lower part of the bumper opening, so its not as vulnerable to debris, and not as disturbing as having a gutter pipe sticking out in front of your car.

 

I think the best way would be to put it in the lower grill but that would take some creative piping. Possibly in the fenderwall like the CAIs

 

Its too much work for such little gains imho.

 

When I tried the long pipe intake, I discovered that it actually hurt performance. The long pipe had too much resistance to air flow, added a lot of noise and vibration and really didn't add the high rpm benefits like the elbow did. Even though I spent a lot of time building that long pipe, I threw it away in the end. That little elbow is really good though. It adds a little in the mid-band, and a decent amount in the upper rpm range while only yielding a very slight drop in low rpm performance (unlike most other intake setups).

I didn't want a noisy intake, so cutting open the stock airbox was out of the question. Also, I did not want a "gutter box" hanging under my car. To date, this is the best compromise I could find with the performance gains I wanted.