I did a search and found nothing on these keywords combined. Does that mean everybody talking about a CAI still has coolant at 180+F running through his/her throttlebody?

Just curious.

 

i believe i saw ONE member at some other forum ADDRESS this issue with their car (9th gen toyota corolla forum maybe). i too am surprised no one has even ADDRESSED this one at this forum. especially for the members in the warmer areas, like so-cal, where it would probably be useless (unless you live in big-bear or something).

if you have no clue to what we're talking about... there is a coolant line that passes through the throttle body in the 2AZ-FE engines.

 

All manufacturers do this to prevent the throttlebody from icing and sticking open. It's been in the basic hot rod mods list since 1988 or 89. Just curious why no one has talked about it here.

 

i never knew it had coolant running thru it... learn something new everyday

 

i dunno about a by pass, i know alpha werks makes a bigger TB though

 

i didnt get a chance to take it off this weekend but i will next saterday and i relay want to hit it up with the die grander but im afraid i might mess it up lol

some one might want to do this before i do but there is a lip on the throttle body that doesn realy need to be there if you look on the inside might be able to pull some better numbers by grinding it off


but any ways ill see about this collant line and what i can do with it but i havent noticed any hot temps on the throttle boddy i have been groping my intake since i put it on and its like a cold can of coke after my hour drive home going 80mph almost constant (then again its 50F when im going home so that my play a big part lol)

but ill check out this coolant line does any one know if there is a sensor to make sure its going to the t/b or can i just take it off and cap it off with no problems???

 

Yea, we don't consider stuff like that around here. Winter is just around the corner

 

It's an age old hot rodder trick that is rediculous. Air is drawn through your throttlebody at such a rate that it could not possibly be heated.

 

Actually, it's to keep the throttle body from sticking and icing up during freezing "weather". You know, when it's 5 deg outside. The heated coolant passes thru the throttle body to warm it up.

 

I agree with you on why it's there. My point was that adding a bypass does nothing.

 

Agreed... I did this mod to my P5... it's great during start up, but within the first 10 mins of driving, the engine bay (including the Aluminum intake piping of the Injen CAI) got so heatsoaked anyway that it didn't really matter.

Now... if I had wrapped the intake piping in header wrap... Hmmmmm lol

 

Oh, I see your point. Yup, I agree.

 

I remember on the honda's we just connected the inlet and outlet together.

 

I would assume it's the same for all of them... just get a 2-way brass barb that will fit in between the in/out hoses to splice them together, clamp and you're set.

 

ill try it out tonight or atleast see what i need to do it

 

It should be as simple as disconnecting the hoses and reconnecting them with a tube.

 

https://www.scionlife.com/forums/vie...420&highlight=

i brought this up last year, its been disconnected since

 

Thanks. That's what I was looking for with my search.

FWIW, and I know this will sound like heresy, if you spend $300 on a CAI but suck all your air through a warm throttlebody, you've just defeated the purpose of having your CAI. If you notice, the aftermarket devices don't get any colder air in them than the OEM setup, because they're all drawing from the same place, unless you really believe the air is denser a foot off a black surface that's 140F on a hot day.

So, (and I'm still gathering some pieces to prove this) my assertion is that I will see as much or more gain from bypassing the throttlebody coolant as I will from any CAI.

More to come...

 

crap. i was 100% with lo-bux racer on this until i read this thread... now more like 50/50.

 

Just do it... it's an easy enough mod that if it doesn't produce any gains for you that you can just switch it right back. Plus you get to know your engine bay a little better.

I might actually do it to my tC since I'll be using an Umnitza intake and won't have any aluminum piping.