Well it doesn't make any economical sense ......11,000 can get you alot of nice goodies for a 4A-GE
and I can bet.....NO CHALLENGE YOU!!! that I can make these for less than 1000 and they will work 4 times better than UNI.
IF you Follow These Seven or eight easy steps you can also make your own ITB air filter socks
All you require is good quality multi-layer foam or you can use three different layers of foam (varying filtration size)
Good Quality Aluminum or Stainless Steel Mesh
A pair of Scissors
High Quality Glue
First Step !1
Get Good quality Foam .........
STEP 2 .
CUT THEM INTO APPROPRIATE SIZES LENGTH .......Longitudinally
STEP 3.
CUT THE WIRE MESH IN THE SAME FASHION
STEP 4.
ROLL THEM UP and USE HIGH QUALITY WIRE TO HOLD THEM TOGETHER BY TWISTING THEM.
STEP 5.
MAKE SURE THAT THE SIZE OF THE ROLLED MESH IS SLIGHTLY LARGER THAN THE ITB DIAMETER (EASE of ACCOMMODATION)
STEP 6.
ROLL THE LAYER OF FOAM ON TOP OF THE MESH CUTTING OFF THE EXCESS AND GLUING TOGETHER THE SEAM/EDGES ...AND CUT A HOLE IN THE REMAINING FOAM TO FORM THE TOP .....AND GLUE IT IN PLACE ....LEAVE FOR 2 HOURS TO SET.
STEP 7 (FINAL)
USE MOTUL (Japan) AIR FILTER OIL(available at any bike shop) GENEROUSLY ON THE FILTERS , USE ZIP TIES OR STEEL SCREW CLIPS TO HOLD THE FILTERS IN PLACE AND YOU'RE READY TO GO!
Source : WWW.VOLKSDEVIL.COM (accessed 03-08-13)
IN conclusion using these easy 7 steps anyone can make good ITB air filters for next to nothing , they work great .....allow excellent air flow characteristics and filter out considerable dust particulate.
No need to spend $$$ on name brand stuff, with SUPREME ULTRA UNI FILTER OIL which was brought down by Gabriel from the heavens.
best regards
Saad Mirza.