FACT or FALSE (regarding part offered on Ebay)...

[niennumb1]

I have seen this part available countless times and claims it will increase mileage per gallon:



Is it true this thing really helps or is this a piece of junk that doesn't have any real functionality for what it claims?

Thx in advance!

[CodeRed]

I think they are compleat BS, although some people will swear by them. If you want to see a little gain in MPG you should look into a Cold Air Intake. The only 3 on the market (correct me if im wrong) are made by AEM, Stillen, and Fujita. The AEM and Fujita can be found on https://www.shop.versaspeed.co...yId=2

Hope this helps you out a little.

[HareBrained]

This is another "Tornado" type of product. Theory is that by purposefully causing a controlled turbulence, the air flow is consistent. This is also used on airplane wings, typically called spoilers. Although, the more energy in the air flow, will result in lower pressure (less density), but pressure may be higher than if there is "random" turbulence because of the strength of pressure waves.

Bottom line, it could work but there are some many other factors including shape and materials of the intake. Where the turbulence is introduce. And how the mass flow sensor reacts to the conditions it sees.

Interestingly, in a related story, Grassroots Motorsports determined that the "intake trumpet" found in the Honda Civic intake box actually improved torque when installed and barely changed peak HP. That is a device that decreases turbulence.

[Ever Victorious]

It is an overly simplistic solution to a problem that people have been demanding a fix for for a long time: fuel mileage.

If that little scrap of metal did anything, it would be installed in absolutely every car built.

Again, the theory of operation sounds great, but it just doesn't do it. It more than likely doesn't ACTUALLY work because it increases restriction in the intake more than it helps anything.

[niennumb1]

I kind of figured if there was a part out there consisting of something cheap like this that they knew was to increase fuel efficiency that Nissan would just include these standard, so it is odd that this would be separate. It would cost them either cents on the dollar or a couple bucks to include.

Thanks for the helpful info everyone!

[Martin Roy]

MythBusters also went on to try several of these "fuel savers" and found them either useless or they make it worst for the MPGs.

[bone_stock_240]

I thought the objective was to reduce turbulence in the intake. Instead of polishing the inside of the manifolds, you should scuff it with 100 grit. That will add at least 5 ft-lbs before 2500 rpm.

/sarcasm

[coxcj]

I was looking at that same part thinking it's probably too good to be true.

I've got to do something to get better gas mileage. I've had my car just over a week now, and I've been extremely disappointed. The sticker said 30 city & 36 highway, and almost all of my driving is highway. I've filled up twice now, the first with an mpg of 29.82 and the second at 28.93. I came from a Jetta getting the average 32-33 mpg.

Thanks for the info on the CAI. Are there any more mods that will help with mileage?

[bone_stock_240]

Has you car even finished the break in period yet? You are complaining about not getting 36 mpg on the first 2 tanks of gas you have ever put in?

[niennumb1]

My dealer said it would be at least 5,000 miles before noticing a fuel efficiency change due to break in of the engine and all the parts working together.

[g00kb0i]

doesn't this just create a "tornado-like effect" to help make a better mixture of fuel and air to create a more efficient combustion ? so im guessing the better even fuel distribution in the combustion process created more hp and better overall mpg...

[CodeRed]

doesn't this just create a "tornado-like effect" to help make a better mixture of fuel and air to create a more efficient combustion ? so im guessing the better even fuel distribution in the combustion process created more hp and better overall mpg...

it creates a wallet emptyness, If this this actually worked im sure it would be on every production car made. can we be done with this thread yet?

[bone_stock_240]

Any sort of tornado or vortex that may be created wouldn't make it past the throttle body. So all your intake manifold is seeing is crappy turbulent air. In conclusion, it does nothing, and can actually harm your performance because it causes a restriction in your intake. Just FYI.

[coxcj]

Has you car even finished the break in period yet? You are complaining about not getting 36 mpg on the first 2 tanks of gas you have ever put in?

I guess I had a higher expectation than I should have. I've never had a brand new car and need to remove the rose-colored glasses from my eyes. I'll keep my whining to a minimum from here on out.

[bone_stock_240]

Just give it some time. The car needs to be driven for a couple thousand miles before you will see the fuel economy that they are rated at. Drive it and enjoy it for a while, and you should see an improvement. Just be patient. These things don't happen overnight.

[Ever Victorious]

Also, on the V, there is a key to improving fuel economy: slow, smooth acceleration. By your "30 and 36", I'm assuming you have a CVT. Never let the CVT rev above 3,000 rpm or you'll be losing a fairly significant chunk of your economy.

BTW... we have drifted off topic, and we have thoroughly beat the myth of the tornado device like the dead horse it is.

Thread locked.