Let me first start by saying if you live in a cold climate this may not be the best idea. I live in Florida and never have to worry about freezing scenarios you northerners do.

Will this gain hp...probably none. Will this help keep air intake temperatures down, yes.

There's no need to have hot coolant flowing through the throttle bodies in my climate, so it's getting deleted.

For the record, I've done this on my old Z and now on my 08 G35S and I can tell a difference on a hot day.

First thing you'll want to do is remove your intake tubes.

Next completely remove the lines in red on the passenger side connecting to the throttle body.



Add caps to the connectors on the throttle body and on the tubes the lines connected to.



Connect coolant line C by spinning the bottom of the hose around and facing it towards the coolant hose on E after removing it from the throttle body. Use a connector such as the one pictured below.







Completely remove the line in red and cap the throttle body and line it connected to.



Reattach intake tubes.

Done.

 

Quite interesting. Thanks for the write up!!

 

Why do I have the feeling your gonna bring all sorts of interesting n helpful info to the table with ya? Oh that's right it's bc I've seen your build thread

 

I had this on my 05 Maxima - it was part of the thermal spacers for the engine and the throttlebodies.. I may do this once my warranty is up however, even though it's completely reversible. Nice Contribution!

 

Thanks!

 

Interesting... I may do this myself

 

Mannnnn I really want to do this when I upgrade to the eps 70mm throttle bodies...

Anybody else do this bypass? Seems legit

 

Anybody else have good luck with this?

 

I wouldn't waste your time. That's a tiny amount of surface area with hundreds of cubic feet of air traveling by it every minute. The amount that that the air can warm in the fraction of a second it passes through the throttle body is so insignificant that it is probably undetectable.

 

I think I am going to do it anyways. I will just put the male to male connector thing in and tie both lines together. Will it do anything, prob not much. But we’ll see. I’ll do a heat test under hood before and after to see. Sounds like a great idea to make intake temps as low as possible. Even if it is a couple degrees.

I know my car runs undoubtedly faster when in the winter. I guess we will see if it still gets just as heat soaked.

 

I think the difference you'll notice, if anything, if fractions of a degree at most. How hot the throttle bodies get is almost irrelevant. The air doesn't stay in them long enough to warm up

 

Lorentzoe45, any update with pics is appreciated. Looking to do this mod too.

 

Havent done it yet. I wonder what size this male to male barb connector thing is? (Or whatever it’s called) 1/4?

I feel like a video would be perfect! I’m just going to put in one of these on each side and connect the hoses.

Only 2 concerns:
- Hopefully it will not leak if I just tighten down the clamps on that adaptor thing? I mean the radiator has same clamps, but the adaptor should give enough room for the clamps to bite I and not leak.
- Weather in Georgia sometimes gets cold for a couple months a year. Hopefully it won’t effect reliability when it’s 20 degrees out. Not sure, but willing to try!

 

Reviving with an update.

The barb fitting is not needed. As you can see on the images, the feed for these is coming out of the "Hot" side of the coolant neck goes to throttle and goes back in the cold side.
The system has this this way so coolant can circulate and not stay stagnant, this is not a crucial part of the cooling system and can perform without it.

Two caps with a hose clamp will achieve the same result with a cleaner look.