beams maf cut into a rubber intake hose. Just don't do it.

[mr220v]

I see this in people's swaps fairly often. Basically, it's where someone takes a stock section of the original intake system, cuts a hole in it, sticks the maf in the hole, and glues is down, or maybe holds it down with a set of random screws.

Any time you're dealing with a hotwire MAF, the reading is based off of the temperature of the wire over which the intake airstream is passing. If air velocity is too low, the car runs lean, if it's too fast, the car runs rich. So, the reading is going to be heavily influenced by the size of the pipe in which the maf sits.

There are cheap aftermarket intakes for the standard toyota bullet type maf which can be had for around $30 off ebay which are sized properly. It is also possible to use the newer maf found on the spyder, but these intakes seem to cost a bit more.

So, for people considering mounting a maf in some random pipe, just don't do it. Spend the $30.

[midnite]

$30 for what? Where to by from?

[Servin]

For a camry 97+ 1mz CAI on EBay. The thing is with a AFM or MAF putting it right on a aftermarket filter creates uneven measurements because of the turblant airflow. So getting a pre-made CAI will position the MAF in a proper position to the get the most accurate reading.

[mr220v]

Just buy this:

eBay Motors: 99 00 01 TOYOTA CAMRY / SOLARA V6 AIR INTAKE SYSTEM W (item 360084883150 end time Sep-06-08 13:36:00 PDT)


Any car with a hotwire maf that mounts in the intake pipe will run like hell without it.

[midnite]

that what the SARD kits come with... but this look like it is a little bit further in than the SARD kit. The SARD kit the sensor is about an inch from where the air enter. I am trying to find a way to replicate the two fin that the stock pipe has.. :-) but do they just sell the pipe? Cause I want to get the k&n instead of that cheap air filter...

[Lion_HUN]

Originally Posted by midnite

but do they just sell the pipe? Cause I want to get the k&n instead of that cheap air filter...

Get the kit and throw away the cheap filter It's only $11

[Servin]

Looks like i have stumbled upon a break. These are a couple of pictures of BEAMS car with aftermarket intakes but notice they keep part of the stock box? I wonder if that has any effect on readings? I think its just a resonator box but it might have another purpose.

[midnite]

that box is just for resonating only... the air coming from the filter....

[Servin]

Yea i thought so but why would they build it into a aftermarket inatke like that?

[94MR2]

My guess is to get the benefits of increased flow without the straight intake sound. Servin, Do you have a link with bigger pictures? My intake elbow coming off the tb has a little resonator box under it, its about the size of a coffee cup. I doubt it would effect the readings as the resonator box is after the sensor.

[Servin]

Unfortunely no those were the biggest those pictures were.

[Servin]

Ok those of you that have the stock BEAMS airbox do you have this cone thing on the side? Its another one that i have seen and i really think it does something other than resonate the air?

[94MR2]

What cone shaped thing are you referring to? The box on the intake?

[puretone]

Originally Posted by Servin

Ok those of you that have the stock BEAMS airbox do you have this cone thing on the side? Its another one that i have seen and i really think it does something other than resonate the air?

http://img303.auctions.yahoo.co.jp/u...pmwsw68882.jpg

hey mine has a smaller-ish sort of reservoir looking thing attached there, which i removed...the way it was located seemed like it was some sort of like a bypass should you ever snorkel up some water or something...who knows maybe it is to dampen the intake pulsation noises?


edit: BY THE WAY, the way mine looks it seems that it could never suck any air thru it, while this one in this picture looks like it could possibly serve as an extra airfilter...

[puretone]

Originally Posted by 94MR2

What cone shaped thing are you referring to? The box on the intake?

right after the airbox, the thing that looks like it deviates from the intake duct....black cone with some white thing inside it

[puretone]

The first step in upgrading our two-seat rollerskate was replacing the factory intake system. As with most OEM intake systems, sound dampers and resonator boxes have been added by the manufacturer to reduce engine noise and to increase driver comfort. However, some of us are more comfortable with a screaming engine and the extra power that comes with releasing the intake from the suffocating clutches of these dampers. This is where the Injen Intake comes into play. Injen constructs its system from mandrel-bent 6061 aluminum because of its light weight and strength. Aluminum also has excellent heat dissipating properties and a strong resistance to corrosion. The piping size used in the kit was determined after examining a number of factors--size restrictions, relative filter placement, and maximum usable airflow capabilities, as is the case with all Injen intakes.

[94MR2]

I dont think it does any more than kill the resonance from the intake. Some older 4wheelers had little boxes on them plumbed into the intake they were called boost bottles, very similar.

[Roman]

sound is made from pressure waves of various frequencies travelling through the air.

If your intake is making lots of noise, its losing the energy of the reflected pressure waves out of the system.

Imagine if you could capture these pressure waves on their way 'up' the intake piping, and reflect them back down the intake again towards the motor, what would happen?

You'd have Less noise (lost energy) out of intake, as that pressure wave would be heading back in the right direction to help air flow into the motor.

Or maybe not, its possible they're just there to cut down the noise.

Anyone got enough $$ to dyno with and without? hahaha.

I remember reading some good article about resonators in intake used for power gains (as opposed to waves cancelling each other out) and there were some good gains to be had, theoretically.

[MANDALAY]

Originally Posted by Servin

Ok those of you that have the stock BEAMS airbox do you have this cone thing on the side? Its another one that i have seen and i really think it does something other than resonate the air?

http://img303.auctions.yahoo.co.jp/u...pmwsw68882.jpg

He Buddy ,
We all have it in our MR2's if you have all the factory air boxes.
Have a look at mine in the Beams register.
What you think is white is really the reflection of the flash on the camera.
That resonator is pretty shinny plastic compared to the rest of the air box

[94MR2]

Originally Posted by Roman

sound is made from pressure waves of various frequencies travelling through the air.

If your intake is making lots of noise, its losing the energy of the reflected pressure waves out of the system.

Imagine if you could capture these pressure waves on their way 'up' the intake piping, and reflect them back down the intake again towards the motor, what would happen?

You'd have Less noise (lost energy) out of intake, as that pressure wave would be heading back in the right direction to help air flow into the motor.

Or maybe not, its possible they're just there to cut down the noise.

Anyone got enough $$ to dyno with and without? hahaha.

I remember reading some good article about resonators in intake used for power gains (as opposed to waves cancelling each other out) and there were some good gains to be had, theoretically.

A more noisy intake doesnt exactly mean lost energy. The sound is made from sound waves that is true. Honestly I think the vacuum from the motor will overcome with pressure waves reverberating in the opposite direction. I am still leaning towards it being a sound reduction device.