Afe MagnumFORCE Stage-2 PRO 5R Intake System

[s2thauie]

I purchased this air intake kit for my 2013 trail edition and I had some fit problems when I installed it. There is what I think is a vacuum line that now runs up over the engine which is being compressed by the main tube on the air intake. I took it in for an oil change and the guy said that it wasn't a problem, but I have noticed significant fuel economy decreases since I installed the intake. I'm from Canada so I only have liters per 100kms to compare. But when I did my first 10,000kms I was getting 12L/100kms (19.6MPG) average which is not amazing, but pretty good for a truck this size. Now that I put on the intake I'm getting 15L/100kms (16.6MPG). I'm not sure if it has to do with the vacuum line or what. I was always under the impression that putting on the air intake would give me better fuel economy rather than more power, but its giving me neither.

Any help or suggestions would be great, thinking about taking the intake off to get the fuel economy back up to something more reasonable.

Thanks guys,

S.

 

[1engineer]

Aftermarket intakes are good for one thing on a 4Runner: Sound. If you like a little whistle, this mod is for you. Whatever line you are talking about is not the cause for your decreased fuel economy. What is the cause? Who knows. Could be you are driving it harder because of the sound during acceleration. Could be just the difference in efficiency due to temperature. Could be anything. Putting your old OEM intake (which is cold air anyway BTW) will not guarantee better efficiency as it could be any number of things that changed. Put the old one back on and see what happens. You can always sell your new one at a garage sale.

 

[Okki]

In addition to what [MENTION=66316]1engineer[/MENTION] already said (BTW, also search for his excellent article on why aftermarket intakes generally suck (all pun intended)):

You may not be comparing apples to oranges in terms of mileage because of weather and environmental related issues (like winter gas, etc). your driving style/habits are likely different during the warm weather months as well.

If you had issues installing the unit, it may be that your ECU is constantly trying to re-learn how to run the engine because you have intake leaks that cause inconsistent airflow/turbulence. And last but not least.. how dirty is the filter?

Hopefully you figure it out...

Okki

 

[s2thauie]

Anyone want to buy my air intake - sound is not what I'm looking for, I was looking for some slight throttle response improvement and maybe some fuel economy. If anyone wants some whistle - then I've got your ticket. Best offer will take it.

S.

 

[1engineer]

Anyone want to buy my air intake - sound is not what I'm looking for, I was looking for some slight throttle response improvement and maybe some fuel economy. If anyone wants some whistle - then I've got your ticket. Best offer will take it.

S.

Oh my! This has to be the absolute best response to a post that I have seen in a long time! Actually it's classic, just classic. I can see the ad now:

For Sale:
One vehicle mounted whistle
Guaranteed to keep deer away!
Will trade for anything, except cold air intakes.

I "like" your post 1,000 times.

 

[Hawaiian4runner]

Anyone want to buy my air intake - sound is not what I'm looking for, I was looking for some slight throttle response improvement and maybe some fuel economy. If anyone wants some whistle - then I've got your ticket. Best offer will take it.

S.

Come on. It's not the end of the world. Besides whistling it does kind of growl when you step on it. I think it probably does flow a little better than the stock air cleaner although net benefit is probably zero to none. It's washable, it looks kind of cool and you already paid for it. If you wheel in really dusty conditions you may want to go back to stock. It probably does not filter as well as the OEM.

 

[Antman]

[MENTION=96883]s2thauie[/MENTION]

The vacuum line that's being compressed is probably the line that connects to the fuel pressure regulator- hence the poor fuel economy. That vacuum line connects to the factory air baffles on the intake.

Go get some new vacuum line at your local parts store and run a new line if it's damaged or too short.

 

[s2thauie]

[MENTION=96883]s2thauie[/MENTION]

The vacuum line that's being compressed is probably the line that connects to the fuel pressure regulator- hence the poor fuel economy. That vacuum line connects to the factory air baffles on the intake.

Go get some new vacuum line at your local parts store and run a new line if it's damaged or too short.

I found this picture online, there is a cluster of 3 hoses that join just under the air intake main 'tube' for lack of knowing the correct terminology. The one that is pinched is the one that travels directly back and under the 'tube' and the top of the engine block. I thought about getting some hose and just rerouting it, but wasn't sure of the ramifications of lengthening or changing the path of the hose - I'm sure there aren't any, but obviously would like advice.