TRD Intake or Injen Intake?

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Aug 11, 2005 | 01:57 PM

#41

acasanova

Senior Member

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Joined: Nov 2004

Posts: 615

From: Miami, FL

Quote:

Originally Posted by toastbox

Quote:

Originally Posted by AtC2nv

ahh i get ya...thanks for the info...umm i also had another question...its about that TRD filter that replaces the cotton one thats stock...i think the TRD one costs about $60. I kno that FRAM and other companies use them too...do thay actually do aything? do they make the intake less restrictive by replacing the cotton filter???...thanks for all the info

you're quite welcome.

regarding the TRD filter...I haven't seen them, nor read anything about them, so I don't have any first hand info on them, but I'm speculating that they wouldn't help that much. The reason is that the stock intake is restrictive at the inbox itself (an enclosed filter will *always* be more restrictive than an open one...try breathing through a straw, and see if it's more difficult than normal breathing. But lets say for a minute that it's not. The stock intake still has that baffled inlet pipe, and that too hinders airflow into the combustion chamber.

Maybe someone else can comment on it, but again, given the above restrictions, I see that TRD filter more as a marketing gimmick than an actual performance mod.

I performed a Dyno on my 4sp a while back with an Injen axleback and a K&N panel filter (virtually identical to TRD). The results where what i expected, after 2 pulls with the stock filter i tried the K&N there was no measurable difference albeit 1hp, that could have been the result of another variable in the dyno run and not the actual filter. Like Toastbox stated the problem lies with the stock airbox, evry restrictive it is the same box found on the 1.8 liter 1ZZ 2002+ Corolla a much smaller engine than ours.The stock filter from denso is very good i think i heard from one of the members here that its made out cotton as well, i can tell you for a fact that it flows well until it is clogged. The only advantage i see with the TRD is that it is washable reusable, and with a much higher airflow ratio such as the use of the Supercharger it will perform much better..

Aug 11, 2005 | 10:32 PM

#42

emiller

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Joined: Jan 2005

Posts: 722

From: Columbus, OH

Quote:

Originally Posted by OliverThomas

Once the car is moving you have air entering the front of the engine bay through what??? Oh yeah, a radiator, which is essentially a huge heater for the engine bay. All the air coming in is sucked throught it, someone over on yoursciontc.com ran a tempature sensor under the hood for a week or so, reported 1-yes, a huge heat spike when sitting at idle under the hood, and 2- yes, a small dip in temp under the hood when the car was moving, but the air was still 10x hotter than fresh air taken from outside the engine bay.

Why would you set the sensor right on the ehaust manifold or did you test this in the winter time? Unles you are touching that there is nothing under your hood that is 10x hotter than the outside air. I dont even think that gets that hot on a street car.

Aug 11, 2005 | 10:46 PM

#43

AtC2nv

Senior Member

SL Member

Joined: May 2005

Posts: 202

The apprentice is learning well from the matrers hahaha

...jus kiddin..but anyways many thanks to both toastbox and acasanova for the info

Aug 12, 2005 | 01:56 AM

#44

OliverThomas

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Joined: Mar 2005

Posts: 92

From: Chicago, IL

Quote:

Originally Posted by emiller

Quote:

Originally Posted by OliverThomas

For christs sake, I forgot for a moment I was on a board where every time you open your mouth people take every word literally, looking for something they can go, "nuh-uh!" to. 10x hotter was a figure of speech.

He mesured the air back behind the engine near the right of the throttle body area because that's where his custom SRI drew air.