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Make A 4" Fenderwell Intake (FWI)[*]





colder air means there's more oxygen in it. In order to the the air/fuel ratio correct, and since you're running richer air, then you must run richer fuel.
 
It still doesnt make any sense one person on this thread said they got a improvement in gas mileage why would it improve gas mileage in one case and decrease it others
 
because every car runs different and is in a different environment. According to my principal, sucking in hot air would give you better gas mileage, but i still dropped with a short ram. Either way, we're talking about 1 mpg.
 


Here's my intake, quite easy to do, very simple. Cost me $66 out the door with a $10 off coupon from advance. It's 4 inch tubing with a 45 degree bend, I tried the 22.5 degree bend but the filter was to big and was hitting I believe the cruise control. I bought one 3.5 to 4in coupler, bought a 7/8's holesaw bit for IAT, came with the grommet. K&N filter 4x9 inch very pleased. I actually saw on the butt dyno you can def feel the difference. Supercharger screams like a baby. I also had a old 45 degree elbow and since my car is a 98gtp I already had the triangle duct where the guys use the roof flashing. I attatched the 45 degree bend on the inside of the fenderwell to duct cold air right to the tip of the filter.

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Pic quality sucks, cell phone pic but you get the general idea.
 
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The elbow in the fender will do nothing unless you have it all the way to your fog light housing and made a ram air or something. you would be better off just opening up that little triangle area to let more air thru.... but anyways all you have is a short ram, which is hot air, and yes it will be loud, the s/c whine that is.
 


my problem with this whole thing. the measurments for the roof flashing were no where close and i mutilated the first roof flashing and have to do it over again tomorow. and yes getting the pvc into the 90 degree elbow small side is not that easy after 2 hours of messing with it and cutting open my hand. im going to try again tomorow and see how this turns out. only thing i changed is i painted the pvc pipe blue to just have a different look.
 
after all that mess with the flashing and everything, I just switched mine over to short ram. The filter was getting rediculously dirty being right next to the road. It's much easier now :) I can't really tell a difference on the butt dyno.
 
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