Any stock intake mods?

[t0eknee]

Has anyone out there made the I4 camry sound mean by modding the stock intake? is there a silencer u can take off the stock intake like on other certain cars?

[Epsilon]

K&N have already tested their I4 intake system on a fellow member and it won't be long until it goes into production. Be patient my friend.

[wireless]

Originally Posted by Epsilon

K&N have already tested their I4 intake system on a fellow member and it won't be long until it goes into production. Be patient my friend.

Fujita says they are waiting for a guinea pig car for the V6 intake

[07XLE]

Where is Fujita located, Cali? Nevermind, found it...

E-MAIL: info@f5air.com TEL: (951)694-9177 FAX (951)694-9277

Fujita Air
42136 Remington Ave
Temecula,CA 92590

Someone, PLEASE take your V6 in!!!!!!

[Brandon402]

Originally Posted by Epsilon

K&N have already tested their I4 intake system on a fellow member and it won't be long until it goes into production. Be patient my friend.

Im curious if the K&N filter would be good enough though. The intake system itself doesnt really look all that restrictive. So, wouldnt one of K&N's drop in filters work just as well? Id be very interested to see if there were any difference at all in using the drop in in the stock intake system vs an entire system replacement.

[wireless]

Originally Posted by Brandon402

Im curious if the K&N filter would be good enough though. The intake system itself doesnt really look all that restrictive. So, wouldnt one of K&N's drop in filters work just as well? Id be very interested to see if there were any difference at all in using the drop in in the stock intake system vs an entire system replacement.

I've got a K&N drop in on my V6,a nd don't really notice much of a difference.

BTW: I told the guy at Fujita that I was emailing with, that they should post on here. It would get them a test car, as well as build up the market for the product. Let's see if they take the advice.

[Epsilon]

Originally Posted by Brandon402

Im curious if the K&N filter would be good enough though. The intake system itself doesnt really look all that restrictive. So, wouldnt one of K&N's drop in filters work just as well? Id be very interested to see if there were any difference at all in using the drop in in the stock intake system vs an entire system replacement.

Originally Posted by lininator515

i got my car back. he said the test went well and it almost got 11 hp but iono cause i didn't get to look at the dyno sheet. he was in a really big rush getting an is250 ready for the sema show (he was suppose to email me pics of the car). anyways... i believe he said k&n mostly just design sri's now cause they don't want to have to possibly drill into the car to make room. he did however say that because of this, they're using larger piping to allow more air flow. when i picked up my car, the last thing he was working on was the heat shield. he said he'd give me a call if he needed my car again, but he didn't so i'm assuming that he found a 5speed manual to play w/. now i'm just waiting for the free intake . should take 2-3 months is what he said

[Brandon402]

Interesting. Although we are talking about an intake anyway, its not like its a huge mod thats going to result in anything the butt dyno would feel anyway. Im honestly more intereted in any gas mileage improvements. Personally if I was looking to get any kind of noticeable power out of these I4's (like I have), Id lean more towards FI anyway. I really dont think there would be much sense in trying to harness much power out of them NA.

I can honestly say I havent heard much said about them at all actually. As far as performance. Ive heard alot about fuel economy and how they are so fuel efficient that they dont even require and EGR setup. But not much else.

[Epsilon]

Originally Posted by Brandon402

Interesting. Although we are talking about an intake anyway, its not like its a huge mod thats going to result in anything the butt dyno would feel anyway. Im honestly more intereted in any gas mileage improvements. Personally if I was looking to get any kind of noticeable power out of these I4's (like I have), Id lean more towards FI anyway. I really dont think there would be much sense in trying to harness much power out of them NA.

I can honestly say I havent heard much said about them at all actually. As far as performance. Ive heard alot about fuel economy and how they are so fuel efficient that they dont even require and EGR setup. But not much else.

I know some may disagree with this theory, but here's my take on this subject. If you are interested in the debate about intake systems, here are the threads: http://toyotanation.com/forum/t148939.html , http://toyotanation.com/forum/t154996.html

Originally Posted by Epsilon

As your new performance intake draws in a higher volume of air which may be much cooler, your engine can breathe easier than with a limiting stock system. With your combustion chamber filled by cooler, oxygen-rich air, fuel burns at a more efficient mixture. You get more power out of every drop of fuel when it's combined with the right amount of air.


With more air in the chamber, you can also burn more fuel than before. That's how a performance intake puts power at the pedal for you: reducing air temperatures, balancing fuel mixtures and providing more air for combustion.


Horsepower increases provided by performance air intakes vary by vehicle, engine size, other installed performance upgrades and more.

With more air and cooler air ready and waiting for combustion, your engine's response at stoplights and freeway onramps quickens. Stock intakes often deliver warmer, fuel-rich combustion mixtures that cause your engine to lose power and responsiveness while running hotter and more sluggishly. With a free-breathing intake system attached to your throttle body your engine is literally inviting you to punch it. '

Performance air intakes can help your fuel mileage by helping your air to fuel ratio get in line. Because you're getting more power from every drop by burning more efficiently, your engine uses less fuel at all times - city or highway. On average, drivers will see a 1-2mpg improvement.

There's a catch, though. Many drivers trade their limiting air intake for a performance air intake and can't resist using every bit of the horsepower and throttle gains. It’s called hard driving, and it's the fastest way to burn-up the gas mileage improvements provided by a performance air intake. Your best bet is to keep your driving habits relatively unchanged, enjoy the extra power at the pedal, and collect on the gas mileage savings.

Originally Posted by Epsilon

Currently, your vehicle draws air through the original manufacturer's intake tube and air box, which is typically loaded with a disposable paper air filter. Automakers design your vehicle's intake tube to be the quietest possible unit that can fit in your engine compartment. While reduced engine noise is of benefit to you, it comes from an intake tube with multiple turns and bends. The result is a drop in the volume of air delivered to the combuston chamber, because your stock intake system completely confines the air box in your engine compartment and the air is usually hot when taken in. This combination of limited and warmer air causes fuel-rich combustion mixtures that don't burn at maximum power efficiency.

[Brandon402]

I agree with that to an extent. In my opinion the stock system doesnt look all that restrictive. However, I do agree that the manufacturer has noise reduction in mind when designing the intake. So, granted, they would design it in a way to reduce that noise.

What I dont agree with is your reference to cooler temps. The way the system is designed now it would have a higher chance of getting cooler air into the intake than a SRI setup (assuming we're talking SRI and not CAI). With an SRI setup (as im sure you know), unless its positioned in such a manor as to not take in the warmer engine air (which most of them are not), I do not see the benefit.

Which is why I still think the stock system with a K&N would see the same gains as an SRI setup. Now, if we're talking a CAI setup, thats a whole different ball of wax.

But, these are just my opinions and im sure not everyone will agree.

[Mistabullet]

Going back to the intake discussion....

I keep reading how SRI's will take in hot air because the intake is located in the engine bay.
What I don't understand is how can this be true when the car is in motion?
I'm sure 35MPH+ will force cooler outside air through the grill and into the SRI intake.


So my question is, Is hot air really an issue with SRI when you have wind blowing through the grill?

(And if you say the SRI tube's heat make the passing air hot, well so would the tube of a CAI)


**********EDIT*********

Now that I think about it some more, I can see how there would be SOME difference in temperature between SRI and CAI, but it seems like the difference would be minute and not even worth the risk of hydrolocking (I don't trust them water bypass's ).

[wireless]

I found the following somehwat contradictory statements online:

1) For every 11 degrees F that you lower the intake air temperature, you're reward with approximately a 1-percent horsepower increase.

So if your underhood temperatures are in the 165 degree F range and it's 80 degrees F outside, you'll get a 7.7 percent increase by ducting outside cool air to the intake.

2)I found that the underhood temps in the stock location are the same when you are moving, otherwise when at a stop it can rise 30-40F, then lowers back to ambient once you're moving again. so focus should still remain on intake diameter and length.

3)Most of the actual gains from a performance intake are through the reduced air resistance by removing the incredibly large and cumbersome stock air intake. If you disregard the dangers of inhaling particulate matter, running without an intake at all will see you most of the same gains. The "cold" vs "hot" air debate is mostly moot, as the distance we're talking about isn't that big, so no big difference in temperature. Finally, that temperature difference is gone when the car is in motion, there is enough air flow to forceably scavange hot air out of the engine bay to be replaced by colder air.

4) CAI: bent piping to an external source of air (i.e. fenders, front bumper).

Pros: obtains cooler air- should gain more power

Neutral: poorly designed CAIs can gain little, no, or even lose power. No intake will gain you significant power. Stick to name brands (Comptech, AEM, Injen, etc).

Cons: long piping results in less throttle response, depending on location of filter, can risk hydrolock (sucking up water into your engine and destroying it).


SRI: short tubing, normally with exposed filter inside engine bay

Pros: improved throttle response, gains in hp when engine is cold. No risk of hydrolock

Neutral: loud sound- pro to some, con to others

Cons: once the engine bay heats up and ESPECIALLY when at rest, sucking up hot air from the engine will result in less power. However, SRIs with a well designed heat shield can lessen this issue.

[Brandon402]

You also have to keep in mind heat soak. No matter where you're bringing the air in from, it still has to pass into the engine bay via the intake pipping. That pipping is also going to be exposed to the engine bay temps which will increase the temp of the air as well. So the trick is, being able to get the colder air in AND MAINTAIN that colder temp all the way into the tb.

[brian01togo]

so are we getin a system for 14 or not ?

[Mistabullet]

So would that mean CAI's = higher air temp since it has more tubing to travel through compared to SRI?


Seems like with all the factors involved, CAI isn't that much cooler then SRI???

It'd be really great if we knew exact temperatures between the two.