Watt-maker

I'm pretty sure they are more for noise control but I also see how they could swirl the air before it is compressed by the turbo. As far as better fuel atomization, after the turbo and IC the swirl is lost and these don't really matter.

Riccochet

This.

They control intake noise. That's it. Take them out, hear more turbo. Put them back, hear less turbo. Same performance either way.

mcfarmall

I took mine out today along with the silly air dam thingy under the front end. I like to live on the edge. Realistically, I don't expect any change in turbo noise.

izzyocon

Does anyone know why one of the intake tubes is so much wider than the other? I took out the much debated twirly thingies and one is 3.7" in diameter whereas the other is only 2.8". What the truck?

13'TwinScrew

It compensates for the length and routing differences to each turbo.

Serious question: Could you buy another sensor and spice into the existing one and make a true dual intake setup? Would the sensor just read either the higher or lower number, or just throw a code in the confusion?

engineermike

1. The sensor is an iat, not a maf, so there is no reason to worry about it.
2. The afe stage II intake does exactly what you are referring to with little/no performance gains.

13'TwinScrew

Well not quite, I've built a few homebrew kits to route the filters where I want them. In this case I do not drive through water or off-road so i'm thinking about using the fog light holes and upgrading to a dually set-up inside the lower opening.

Loosescrews

Cliff notes?

OddBall

While that will improve airflow and reduce air temp traveling through deep water/off-roading won't matter because you will suck water into the intake tract under normal use in a rainstorm.

I had an old 89 Mustang where I routed the intake below the right front bumper and had serious issues after I drove through a storm. At the time it didn't occur to me it would be an issue but several hundred $$ later for a new MAF I learned my lesson. Thankfully it didn't damage the supercharger as well.

Besides, the intercoolers do SUCH a good job at removing latent heat from the intake charge there would really be no need to do this.

VoiceOfReason

Without programming and a separate input circuit for the second sensor, the engine management will ignore both readings as being out of range. It expects to see one sensor within a specific range and to match mappings/algorithms, splicing a second sensor will send erratic voltages/signal, if it even works at all. It requires much more custom work than just slapping a sensor in and tying some wires together.