I've been looking at getting myself this cold air intake for 4runner:
http://www.knfilters.com/search/prod...x?prod=57-9006

But now I've seen what the site (K&N) has to say about the results in such but I was hoping to find some other more "real" results on here. I have a 3.0L v6 in there, totally stock. I just want to know if it is worth getting to increase my HP and fuel millage (cause as we all know 4runners suck that fuel back like there's no tomorrow sometimes...) On average I'd get about 380kms/tank in town and about 420kms/highway miles.

So yeah, hoping you guys can help me out!

 

"Cold Air" intakes are generally a waste of time and money, acording to multiple tests on other platforms (no dyno results on the 3.0 that I know of).

MOST tests result in, at best, equal horsepower and torque as a clean factory replacement filter. And almost no mileage gains.

You're better off doing a tune up, new plugs/wires/air and fuel filter, and a new oxygen sensor, just because it's not throwing a code doesn't mean you're o2 isn't going bad.

I've changed nothing but an o2 in a car and increased fuel economy over 50%, back close to where it should have been.

 

Thanks a lot. Probably just saved me $300 haha. Time to put it into something different.

Regarding the O2 sensor though, are there any that I should consider looking for that can really increase my fuel millage? I think that's my main question and am poking around to find out how to do so!

 

It's not which one is better to increase fuel economy, it's the simple act of replacing it with a quality factory replacement, which will give the ecu the correct readings, in turn telling your injectors to spray the correct amount of fuel.

Not sure what everyone's suggestions as far as a good brand for the 3.0, Toyota factory part would be best, but might cost an arm and a leg.

Also, no promise it will increase your mileage, but there's a pretty good chance.

 

i believe Denso sensors are the preferred one. definitely know not to get a Bosch - Toyotas don't like them. most likely won't increase your MPGs by much if at all, but is a good thing to replace on an 18yr old vehicle. I second doing a full tuneup. If you're looking for good MPGs, buy a commuter car.

 

Thought it was Denso, it's not about increasing mileage above factory, and the o2 sensor definately affects overall economy. 420km is bad for a tank even with the 3vze and an auto.

When my 4runner was otherwise stock on 33's with factory 4.88's, it would push 550-600km out of a tank.

 

Yup, my pup needs a tune up big time then haha...

 

I went with the eBay special cold air intake for 50
Bucks and didnt get any mileage gain however I did notice some power gain and it have it a sexy sound.

 

I only get 300 km a tank out of my 93 , I have no cat, cold air , manual hubs ,4:88 on 33 tsls I have recent ngk plugs wires cap and rotor so I must need an o2 sensor pretty bad.