Could I use these on a BFI???
Thread Starter
Pole Position
Joined: Feb 2006
Posts: 224
Likes: 0
From: OR
The sauce cups would be used in place of the egg cups that some people use for the BFI. I know they are only for looks, but I was wondering what size do the holes have to be when you do a BFI with 3 holes in the box?
Lexus Test Driver
Joined: May 2004
Posts: 1,599
Likes: 65
From: WA
Originally Posted by SCguy58
The sauce cups would be used in place of the egg cups that some people use for the BFI. I know they are only for looks, but I was wondering what size do the holes have to be when you do a BFI with 3 holes in the box?
take a piece of cardboard
cut the piece to the airbox side size
place your cut offs on the cardboard
make a circle around them with a marker/pencil
cut out the circles
when you reach desired size, keep the template !!!
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Thread Starter
Pole Position
Joined: Feb 2006
Posts: 224
Likes: 0
From: OR
I understand how to make the holes, but what I am trying to find out is what size holes should I make in order to gain the most out of a BFI. For example, some people cut out two huge holes, some cut the entire front of the intake box, and some people cut out three smaller holes. Does it make a difference on how big the opening is on the air intake box?
Lexus Champion
Joined: Nov 2001
Posts: 2,328
Likes: 2
From: PHX
Originally Posted by SCV8
Stop stealing tableware, and go buy a large K&N. 
I'm sure you know that the BFI works better... right?
http://planetsoarer.com/indexfull.html#BFI
Lexus Test Driver
Joined: Feb 2002
Posts: 1,421
Likes: 1
From: NY
Cut a hole as big as possible to maximize gains.
The egg cups/bellmouths/salsa holders will only have a positive effect if you plan on driving at 150+ mph with the hood off in a frictionless environment.
Maximizing the area of diffusion is much more important than minimizing turbulence in your situation.
The egg cups/bellmouths/salsa holders will only have a positive effect if you plan on driving at 150+ mph with the hood off in a frictionless environment.
Maximizing the area of diffusion is much more important than minimizing turbulence in your situation.
Lead Lap
Joined: Feb 2003
Posts: 743
Likes: 0
From: Maryland
Originally Posted by verylost
Cut a hole as big as possible to maximize gains.
The egg cups/bellmouths/salsa holders will only have a positive effect if you plan on driving at 150+ mph with the hood off in a frictionless environment.
Maximizing the area of diffusion is much more important than minimizing turbulence in your situation.
The egg cups/bellmouths/salsa holders will only have a positive effect if you plan on driving at 150+ mph with the hood off in a frictionless environment.
Maximizing the area of diffusion is much more important than minimizing turbulence in your situation.