Throttle body spacer...

[EspanolaGuitarista]

does a spacer exist for the 3100. Like that phenolic material?

[geoffinbc]

No. If it did it would not make a difference. It would increase plenum volume bya very minimal amount.

[Rook]

yeah a TB spacer on a non-carb'd engine is rather useless. Regardless what the manufacturer says. Some people have dyno'd before/after and have even LOST power from them.

now if it was carb'd and u had a 3" spacer...those make a difference

[eliteweapons]

the only reson for using the phenolic style is to keep from heating up the fuel in the carb. but being fuel injected it doesn't matter much.

[EspanolaGuitarista]

I see...

So, the heat transfer doesn't matter much. Cool. So putting the IAT farther from the engine would make the biggest difference?

[SappySE107]

RE: I see...

The IAT shouldn't get any different reading between the filter and the throttlebody. Id be interested in seeing a test done on this though. The sensor is plastic so it shouldn't conduct heat from the tubing, and the air shouldn't pick up any measurable heat from the tube either, especially at WOT.

[eliteweapons]

The incoming air temp is the main focus. The cooler the incoming air the more dense it is. If the iat is at the throttle body or in the cone filter won't matter much because it is sensing the temp as it is incoming with little rise as long as you are not sitting idling for a while. If you are doing alot of idling insulating the cold air tube can help too. A better solution to keep internal heat gain down would be to put a heat rejection coating on the bottom side of the lower intake manifold. There is a similar type coating used on pistons, heads, and valve pockets to keep the heat from leaching into the components. That reduces stress and component wear. Here is a place you can check out. They are doing my pistons, headers, crossover and heads. I haven't decided on the lim yet.

http://www.swaintech.com/

[SappySE107]

Yup, coatings are pretty cool these days Friction modifiers, heat transfer coatings, some that act as a lubricant for short periods of time.

The IAT should ideally be mounted next to the intake valves....but good luck with that:P I think the TGP mounts theirs inside the plenum at least.