Vortex Generator

[Roc3b]

I brought it put it in..gas milage went up....I don't drive anywhere under 80mph on the highway and it holds up in the 17.1- 17.7 range...at this point the computer might be wrong ....I am rolling on 20 295/40/20r...so I will take that in a minute.

This might be my last mod for a while....the wifey thinks she is pregnant.

[UCrewX5]

Originally Posted by Roc3b

...the wifey thinks she is pregnant.

Congrats - exciting times ahead

As for this mod, my feelings are if increasing fuel mileage were this easy don't you think the auto makers would be all over this? Snake oil, IMHO.

[phil47]

I noticed this thread on another forum I frequent...

http://www.odyclub.com/forums/showth...hlight=tornado

Is this the same thing??

[motordavid]

Originally Posted by Roc3b

This might be my last mod for a while....the wifey thinks she is pregnant.

Roc, Congrats to you and yourCEO!

I'm with most here: if it were that easy for mpg/performance inc., every mfg'er from KIA to Bentley would have them on!
GL,md

[Roc3b]

the wife works out five times a week and has been feeling a little wierd for the last three weeks her hormones are all over the place anyway...I remember the night in question so who knows...but I will not confirm until I hear it from a guy in a white coat....

So anyway.....I drove this SAV back from Dallas Tx, to my home in Ma. The whole way. 16.1-16.3 that was with cruise on 1748 miles. I drop this little dumb tin thing in the intake and I am getting mid 17's.... am I crazy? Am I seeing things? I dunno...I drive like I stole it all the time and that is what I am getting.

Then again. I filled the tank this morning on the way into the office. I will remove it and see what happens. There also might be a coincidence. I did take out the airfilter and cleared all the crap out of it.

I will say this...I changed the intake and the exhaust to a BORLA on the 99 Lexus LS400 and never got below 21.5 mph on a tank. Before that I got 20-20.6. Since I was driving 110 miles per day I was very happy with that. More air can't hurt.

[Matsoutback]

Do you people seriously think that a 2 buck part will improve anything??? If it did, don't you think that BMW would put it on, if it improved things. I am skeptical, obviously. Manufactures spend millions on developement, you spend 50 bucks.....who are we kidding. I believe the drag "cost" of swirling the air out strips any vortex advantage in modern engines.

I tried one on a diesel toyota a few years ago and had it dyno tested.

The results were; less power, rough power delivery through parts of the rev range and a noticable decline in revs at the top end.

I got my money back!

Mat
3.0d sp

[X5Flyboy]

16.1-16.3??? What engine do you have? I drove my 4.4 from NJ to ID and got 18-20mpg. Have yet to establish what the Dinan S2 upgrade will give me, but it sounds and feels awesome! Clean filters(air & gas) do help, as well as staying away from that ethanol crap. Need more info.

[Roc3b]

yeah...I have to add a REmus exhaust and change the airfilter. These things have to wait....I have a fam situation that has to sort it self out first.

I think that the 20's have an impact.

[rayxi]

There is some theoretical basis for this thing working, as far fetched as it may sound. The vortex doesn't have to continue all the way down the intake to have an affect. All it needs to do is increase the pressure (decrease the pressure drop) along the intake. The increased pressure will cascade down into the cylinder whether the vortex extends that far or not.

However, I'm not convinced the thing increases the pressure at all. If anything it adds an additional pressure drop.

Also, I'd be worried that the flimsy tin contraption could fall apart and send shrapnel down the intake wiping out the MAF and jamming up the valves.

[Roc3b]

Also, I'd be worried that the flimsy tin contraption could fall apart and send shrapnel down the intake wiping out the MAF and jamming up the valve

This is a solid peice of aluminum. There is nothing to tear off.