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Old 11-08-2003, 07:45 PM   #1
S.G.D
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Member#: 36448
Join Date: May 2003
Chapter/Region: VIC
Location: Vancouver
Default independant TB?

this is a spin off of slowmotions thread...i didnt wanna jack

what is an ITB?? how does it work?

i dont get it

Thanks!
~SGD
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Old 11-09-2003, 05:57 AM   #2
warpspeedwrx
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2002 wrx
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ITB stands for individual throttle bodies. IT is basically each cylinder getting its own throttle body and air horn. Here is a pic of a corolla 4age engine with ITB
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Old 11-09-2003, 11:11 AM   #3
Pakin
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MY05 Forester 257X

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Anyone know how it exactly works? Yes I know there is a power increase since there is are dedicated TBs for each cylinder. But I mean, no filters?!?!

-paK +1
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Old 11-09-2003, 06:44 PM   #4
jasona
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You could stick a litte cute filter on each one
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Old 11-09-2003, 06:53 PM   #5
koolaid
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since the TB's sit on top, i would be tempted to use one of theose big oval muscle car filters, one / side
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Old 11-10-2003, 07:25 AM   #6
scotty305
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2000 Impreza 2.5RS
(sept '01-jan '04)

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That car is highly modded, they left the air filters off like some dedicated race cars do (F1, formula atlantic, JGTCC, etc...) Factory individual throttlebody setups I've seen ('94 japanese corolla hatchback) have airboxes like ours, one panel filter feeding into one big airbox, but the airbox has outlets, one for each throttle body. Here's a modified corolla motor (same as the other one), but with filters. http://www.billzilla.org/sprinterbay.jpg

ITB will give you quicker throttle response, and higher peak HP. Sportbikes use individual throttle bodies, and before fuel-injection technology, they used twin or quad-carburators. It's a good thing, but more expensive (parts x 4) and also more difficult to tune.

-s-
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