4" FWI Write Up

[Street_Wolf1049]

Materials Needed-

4" to 3" Coupler (For Stock Throttle Body Only)
4" 90 degree Flexible Elbow
4" Thin Wall PVC Pipe (Atleast 15 inches long)
3" to 4" Thermoplastic Roof Flashing
7" Air Cone with 4" inlet




Step 1-

The first thing that needs to be done is the front bumper needs to be removed completely from the car. Instructions on how to do that can be found here-

http://www.clubgp.com/newforum/tm.as...de=&s=#3296961


Once you have the front bumper removed you'll see that the fender bracket is in the way. You will have to cut parts of this off so that your air cone will fit. Make sure you mark what needs to be cut well and only cut small sections at a time becuase only a portion needs to be removed. Not the entire thing.



Step 2-

Now in order to make your custom FWI intake you will need to get your thin wall PVC pipe and cut a 11 1/2 inch section and a 3 inch section out.





Step 3-

Now, cut your 90 degree elbow into two identical halves


You'll only need one half of this elbow so the other half can be tossed aside.



Step 4-

Using the 3" long piece of PVC pipe you cut out earlier connect the 4" to 3" coupler to the 90 elbow and clamp both sides down. It will be a very tight fit to get the PVC pipe inside of the elbow, but it will fit.



Step 5-

Now, with your roof flashing...


Cut it down to these dimensions...


If it does'nt fit exactly right thats fine, just trim it up if need be untill it fits the way you want it to.



Step 6-

With your 3" PVC pipe connecting your coupler and your elbow together mark off the location for your IAT sensor and find a drill bit just slightly smaller than the IAT itself and drill a hole into the side of the coupler so that the IAT fits snug into it.


Now go ahead and push the intake pipe through the roof flashing and clamp the air cone down onto one side of the intake pipe aswell.

With that being done go ahead and connect the other end of your intake pipe into your 90 degree elbow and clamp it down so that now you should have a complete intake.



Step 7-

Postion the air cone into the fender well through the inside of your engine bay and postion the intake the way it needs to be.

Slide the coupler onto your throttle body and then slide the roof flashing down the intake pipe untill it's snug up agianst the inner fender and connect your IAT sensor back up.






Once you've got it all complete you should have an intake identical to this.[]

[Street_Wolf1049]

[CPHELPS]

Nice work, real clean install. I used roof flashing on mine as well and liked the look it gives.

[98Park]

Awesome write up, this was exactly what i needed. I printed this off and walked into Farm and Fleet matched up the pictures and the parts list with what i needed and got out without a problem. This intake woke up my car quite a bit, it also sounds even cooler than the 3" setup i had. I modified the basic plan to work for my Park Avenue and i'm extremely happy with it, props to chris for the parts list and the write up, i highly recommend taking a look at this if you plan to open up your intake.

[DanGTP]

First of all, I would like to make a motion to make this sticky.

I went to Lowe's today and was able to find most of the mentioned supplies, but in ABS instead of PVC. I was unable to find a 4" flexible elbow, so I improvised and got a 45* ABS elbow. The angle was close enough, and there was enough flex in the coupler to place the filter where needed. Also, I beveled the outer edges of the pieces so that the air would flow a bit smoother.
VERY nice writeup!

[ZMan]

Originally Posted by 98Park

Awesome write up, this was exactly what i needed. I printed this off and walked into Farm and Fleet matched up the pictures and the parts list with what i needed and got out without a problem. This intake woke up my car quite a bit, it also sounds even cooler than the 3" setup i had. I modified the basic plan to work for my Park Avenue and i'm extremely happy with it, props to chris for the parts list and the write up, i highly recommend taking a look at this if you plan to open up your intake.

what exactly did you have to do different for the park ave?

[Rollinunknown]

This is very cheap and would be just as good as the 200 dollar ones with some good wrap around it even.

My problem is 11.5 pice -elbow to- 3inch 2-hose clamps and then whats on the side that hooks to the TB? the other part of the elbow you cut ?

[DanGTP]

The 3" end of the 3-4 coupler stretches around the TB.

[Rollinunknown]

ok well im gonna give this a shot ...