The original intent was to keep the throttle body plate from sticking or freezing shut in extreme cold climates. I wouldnt even worry about it...bypass it.

 

The way I set mine up, it's not bypassed and it makes NO difference. I used the 5/8 hoses that come out of the back of the head & block, just to get more flow....I paranoid like that!

 

I bypassed mine when i did the skunk2 manifold swap on my b16, i just didnt like the thought of hot *** coolant going thru there, i mean the throttle body gets hot enough and i live in florida, so dont have to worry about freezing here, i think it does make a difference any type of cooling u can do for the intake charge helps...especially in turbo..hence the intercooler..but hey just do it, and see it is really easy..

-Braxton

 

did it on my 90 integra, no ill effects.

 

it`s there for another reason also.
it heats up the cold idle valve and shuts it when the coolent warmed up = engine has warmed up.
there are whole bunch of ppl have this bouncing idle problem because of it. (it stuck half open even when the engine is hot)

 

i didn't know this but i woasn't gonna do it anyways. not worth the trouble.

 

I did it on my 93 civic coupe. I have a Y7/Y8 mini-me. I did it and go an idle surge. Went from 800-1200. Put the hoses back on and it went away. I never notice a diffeance. Hope that helps.

 

yep sure does , thanks