Air filters for ITBs

FujiRacing · 12-23-2009, 04:12 PM

You can reach me directly @ 352-217-5554 or email @Fujiracingusa@aol.com. Thanks!

Black91n/a · 01-01-2010, 06:58 PM

No offense, but pretty much any arrangement where you have a small filter on the horns, well, sucks. If you look at factory ITB setups on BMW's and such, they have one thing in common, they use a plenum. That is what I suggest that you do if you want it to perform as best as possible. This allows you to do 2 things, for one, you can take "cold" air from outside the engine bay and feed it to the engine, but secondly, you can get more filter area and get it away from the TB's, reducing the turbulence and giving better performance.

12-23-2009, 04:12 PM	#1
FujiRacing Rotary Fan in Training Join Date: Dec 2009 Posts: 90 Rep Power: 16	You can reach me directly @ 352-217-5554 or email @Fujiracingusa@aol.com. Thanks! __________________ Jimmy FujiRacing www.fuji-racing.com *2010 13B Rotary Miata Semi-PP* 2009 REDLINE TIME ATTACK Modified Class Winner Nashville & Englishtown NJ.(Miata Piston Motor n/a) 2008 REDLINE TIME ATTACK Overall Winner VIR Street Class (Miata Piston Motor n/a) 1990 FC3S Street Car

01-01-2010, 06:58 PM	#2
Black91n/a Rotary Fan in Training Join Date: Mar 2009 Posts: 39 Rep Power: 0	No offense, but pretty much any arrangement where you have a small filter on the horns, well, sucks. If you look at factory ITB setups on BMW's and such, they have one thing in common, they use a plenum. That is what I suggest that you do if you want it to perform as best as possible. This allows you to do 2 things, for one, you can take "cold" air from outside the engine bay and feed it to the engine, but secondly, you can get more filter area and get it away from the TB's, reducing the turbulence and giving better performance.