Well im pretty sure that is a n/a engine for those tests...if you look at the HP produced you have the lowest at 168 and the highest at 202 for stock box..now the 3.4 is rated at 189? ...so there is no way that a s/c engine would only get you a max of 202hp, since they are supposed to add approx. 75hp...

 

Actually the 3.4 is rated at 183 but remember those #s are at the crank which ends up being about a 30hp loss through the drivetrain and a OEM SC with stock boost a 210whp reading would be about right since the stock SC with no fuel mods actually only produces about 50 more hp at the crank.

Plus remember dyno results do vary a little between dynos and conditions.

He's showing the results with consistent conditions.

 

when will the newbie deckplate threads stop and isr's = (

 

A cold air intake just bolts on where your stock system is located. Yes, you probably could fab up a splash shield, but it would be way easier just to stick with the deckplate. Its really bad if you remove the air elbow from the fender, then you got a hole right above the passenger side tire, water will spray right in.

 

Quit your cryin............

 

ahhh yes.forgot about that..no wonder my vehicle feels like pushing a tonne of bricks...

 

Coming late to the party...

A couple of random points:

• Do you run in the dirt at all? If so, the K&N is junk.
  
  
• A "cold air" intake on our trucks, in the sense of the standard design aftermarket stuff like the K&N, is worthless. Two hours on the trail in the sun, or an hour on the pavement in stop & go traffic and the air temp in that "cold air" box is the same as what it used to be before your $200 investment.
  
  
• If money is no object, then look into something like I just learned about today:
  http://www.cryo2.com/products.asp?m=sc&cid=1
  
  WAIT! That was YOU that pointed that out to me!
  

 

As was stated it is in the same place and the model of CAI i was looking at actually has a shield on it. But as was also pointed out i is still not as good as the stock box.


I do run in dirt (it is Texas, what do you think we have here? Water? LOL). But most of the dirt is so hard packed that it doesn't get real dusty at most places where i live. Now down south it is VERY dusty.

I can actually use any standard 3" round filter i want since i have to get one anyways. And you are right that the "Cold Air" part of it doesn't really work. it is the free flowing design of the pipe that helps.

So you like that CryO2? It really works, i have seen it on a few cars and they all love it! Now in cold wether it is not near as effective but on the surface of the sun here in Texas it works great. I have seen a supra run a 12.8 sec 1/4 then run it again using the CryO2 and take it down to 11.9. Almost a full second just from cooler air. Now this was on a 105 degree day and he had that car tuned to the extreme but it still sold me on it.

Overall i think i all going to deck plate it for now AND get the CAI for testing. When i get the results i will post them, it will be interresting. I do know that from my tuner car past CAI's work better on NA cars than TC or SC cars. So who knows...

 

You gonna drag race your Runner?

 

No dude... Pavement.


Agreed, which (on the cheap) is what we cal the "ISR Mod". (look in the tech writeup section)

If you like the benefits of the tube, then do the ISR mod for about $15, or drop $80 on an Airaid JR kit which is JUST the tube. Works great.



I like the concept of it, but it's overkill up here in the PNW. The CryO2 system seems cool for drag racing in the extreme heat, but for bouncing around on the trails, I'd rather take steps to get the heat out from under the hood in the first place. That'll help more all-around than just cooling down the intake.


Hmm... seems like kindofa weird statement since the issue with boost systems (i.e. TC or SC) is that part of the limit of your max boost is how much heat you're generating with the compressed air. That's why intercoolers exist for TC's and methanol sprayers exist for SC's.

Maybe what you're seeing is a more dramatic change in NA once you cool down the intake air. On TC'd or SC'd engines, you start caring about cooling things down around 9psi. But dropping the intake temp by 20* at that point won't do anything if you can't add the fuel and advance the timing to take advantage of it. That usually means that you're running a piggyback or a non-stock ECU...

If you drop the air temp on a NA by 20*, then you're still within the range that the stock ECU can take advantage of it and make the change on it's own.

Now, when I'm on the trails around here in August, I KNOW that I've lost 50-75hp after a couple of hours due to heatsoak from the underhood temps. I just installed a live hood scoop which I already know has helped a TON. I'll have to see how that pans out later this year.

 

You are correct that it is the tube that i was mainly looking for, and i have seen the ISR mod. But since i could get the CAI for virtually free i figured why not? I will look at that airaid kit, sounds intresting.

Totally true, as i said it is all about what the temp is where you live. Here is make a big diff, there it would not be as much.

The reason it usually works better on NA cars is because like you say they don't heat the air as much since they are not compressing it. And like you said it is partly that the stock ECU can take advantage of it but it is also that once you start compressing it the air temp gets so hot due to the compressor (especially on TC cars) that the cooler air form a CAI does not do that much to help anything.

Also on TC and SC cars since they are sucking the air in they can overcome less efficient intakes better than a NA car. On a NA car since it has to have the air sucked in instead of pushed in every little bit of friction in the intake causes less air to get into the engine and therefore less power.

I am also going to get a hood scoop for my truck, and I am playing with the idea of putting 2 on it. One on each side on the hood so that the left one will be directly over the air intake. But I want to see how it will look first.

So between the cooler air and the freer flowing design on a NA engine it helps more than a SC/TC engine. Now how much better it works on a NA engine depends on the car and what else is on it and what it is like under the hood.

One setup that I like is the CAI with a tornado air intake. See: http://www.tornadoair.com/

These are something that everyone should have on there car, I have been using them ever since they came out and you really do notice a difference. In power I have seen anywhere from 3 ? 10 extra HP from them and an extra 1 ? 3 MPG (just like they state, what do you know, a manufacture that actually correctly states what there product can do!). Yes, like I said I am a tuner buff and see a lot of these oddball little items (and not so little). You can get generic versions of there on ebay for $10, I have never tried them but they should work as good.

 

OMG... dude... you're about to lose any of the audience you had here unless you tell us that you're kidding.

On our intake systems, they will do NOTHING. Those things are CRAP. Any "spinning air vortex" is completely destroyed by the time that it gets to the TB. These are nothing but trash, along with throttle body spacers.

Now, that's NOT to say that they won't provide some worth on a TBI engine, but on a direct injection engine like ours, they're WORTHLESS.

 

LOL, as i have said many times, i am a noob with 4x4's. In the cars i have messed with it really does help. But i am sure you are correct that it will not do much with these 4runners. And actually the vortex will make it to the TB in a nice clean CAI style pipe. It is past that that it doesn't do anything. All i know is that i have spent a lot of time at a dyno with a friend of mine and we have messed around with a lot of these things (i need to see if we still have some of the sheets someplace, this was a few years back but i am a pack rat).

One thing i know is that i have never seen it hurt anything so i figure i might as well try it. plus i have a few laying around. I know that there are a lot of mods that work on cars that i will need to rethink on these trucks. but i also know that they all use a combustion engine and work in basically the same way. I have always been a torque fan over HP so a lot of the modding I have done will carry right over to 4x4?s fine. Some things won?t though and I will have to learn as I go on those.

Overall, the tornado is something that I have never seen hurt anything and I have seen it help a lot on cars. So I figure there is no reason not to try it.

 

Umm... okay, but know that you're walking down a path that others have tried... on a dyno and not.

 

True, and as i said i still have a lot to learn about these trucks. Although i have wanted one for years i have just now got my first one so i do have a lot to learn. Give the new guy a break lol

 

I think I am dude, I'm trying to save you time, money and embarrassment. carry on!

 

That you are, it is some of the others that were not so easy on me. But i can take a rebuke, if i am wrong let me know. I don't have a problem being wrong. If i never made mistakes i would never be able to learn form them!

I have made plenty of mistakes in my days of car tuning. And i have also learned a lot from them. I just keep learning :-)

 

... target paractice???

 

Mark does the same thing... even pushing his vehicles beyond their limits with his mods, tweaks, and occaisonal driving, just for fun. Any advice he gives, I pay attention... even if he doesn't pay attention to mine.

 

And i am paying attention, what he said does make sense. It is just going to take some time for me to learn what can be carried over from the car world to the truck world. and vice versa.

I do appreciate all the advise from all of you, it has helped a lot. As i said i am going to go with the deck plate until i get time to test out the free CAI on the dyno. So ya'll have convinced me, it just takes time sometimes... lol