Well did this with the intention of alleviating some rough idle issues and it has helped so for that im trying to contribute back to the thread where i got the info from.

 

I forgot this thread was created. I'm going to put this to rest now that I have a thermometer to show this mod is stupid.

 

Thanks for the detailed walk through with pics. I kept mine reversible. Looking forward to seeing somebody actually measure results...

 

What results are they going to measure ?

 

said it once, will say it again .... nothing is preventing the air from getting heatsoaked by the UIM/LIM so this "mod" is moot.

 

More posts moved from the DIY to the discussion thread.


Results have already been measured, and this does nothing.

The coolant is at ~180F running through a short section of the intake.

Anyone that thinks it's a beneficial mod is ignoring the 230F+ of the components all around the rest of the intake pipe or even higher heat of the exhaust manifold sitting a very short distance from the lower intake manifold.

 

On Sunday I will have quite a few RX-8's around so as they show up I will measure throttle body temps while they are hot and post them up. Some are bypassed (that circuit is thru my turbo now), and some are stock. My guess is that all of the throttle bodies will measure at 200-230F (give or take a few degrees). This mod is pointless.

 

I was referring to what 9k is doing.

 

2 Cents, Instead of using the bypass I just used the autobahn88 kit and connected the TB line from the coolant pump, directly to the rear housing as it got rid of a coolant line, and made things neater. my IAT are 3 degrees above ambient considering we have nothing on are car that measure the IAT post TB, this is a mod that we will never know if it works or doesn't, but for me at least it was a free mod so why wouldn't you do it

 

Because you live in Buffalo and don't want your TB to freeze up

 

I would like to see these results. Not that I would reroute mine back to the TB. I really like not having to mess with the coolant to remove the UIM.


Where do you plan to measure from? Booster line nipple? Maybe you can get one from the service ports on the LIM too. That would be interesting.

 

Yeah, because i'm driving my car in the winter My 8 is lucky to even see spring or fall.

 

I look forward to seeing the results from your unbiased test lol.

 

Per motoiq. Valve allows you to return to stock functionality on the colder days.

 

Suggestion,

Bypass or not bypass, but do not block off. That water came from someplace, if you block off the line, whatever was getting cooled by that water is now not getting any flow.

 

I agree. This might be an option for those who feel that the wise thing to do is block off the inlet with an object lol (i think i read that somewhere here)

 

Unless you use two of them to create a "bypass loop"

 

probably far more trouble than it is worth as you would need to incorporate some Y splits in the line and such. Anyone actually know what comes after the TB in the coolant line network?

 

The line returns to the rear iron, passenger side. I wouldn't block it....

 

^ thanks. Yea i wouldn't ever block it. I think there was a thread similar to this where people were blocking it by dropping a bolt in the inlet to the TB coolant passage. *smh*

 

Autobahn hoses are flexible enough I was able to just route my inlet hose to the rear iron. Less clutter on the block, no disrupted flow, no obnoxious connectors and splices.

 

no issues in Buffalo winters?

 

To quote myself.

 

LOL muuuuust be nice

 

Just looked at my build matrix, I took deliver in March of 2012 with 23K ODO, and put it away this fall with 32K ODO.

Its become quite a spoiled thing since I purchased it.