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Discussion Starter · #1 ·
I had purchased and installed Vortex Generators on the roof in order to reduce drag. They don't help with the commute to work, but when I go on trips I can feel them working and it shows in an average increase of 30 miles per ten gallons. That is pretty good that I am getting an extra gallon's worth of mileage. I can also tell when I'm doing 70mph on the interstate and I only have to give it slight throttle to pop it up to 80 to pass. I love them, they give the car a unique look as well. Now for the photos.


http://www.sigmaautomotive.com/performance/vortekz/vortekz.php
 

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I don't know about the performance improvement (if anything real or not), BUT the look is kinda cool. As Wave Rider said, it would look AMAZING with a sharkfin added.
 

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Somebody else did them just for looks, but he never reported mileage increases. I wonder if it would help if your running a spoiler. Looks cool either way. What did they cost you.
 

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Discussion Starter · #7 ·
eviljack said:
Somebody else did them just for looks, but he never reported mileage increases. I wonder if it would help if your running a spoiler. Looks cool either way. What did they cost you.
$19.95
 
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they held on by 3mm tape? Do you just stick them on and how do you assure they are straight?
 

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Discussion Starter · #9 ·
Wave Rider said:
they held on by 3mm tape? Do you just stick them on and how do you assure they are straight?
They send a cardboard jig to line them up. Yes, 3M double-sided foam tape. They guarantee that, if installed properly, if you try to pull them off, the paint will go with it. They are guaranteed for 3 and last to at least 5 years. I ran it through a heavy-duty carwash the day after I installed them and they didn't even peel slightly.
 

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Just a few things.

1. If you already have a spoiler I think it does the same thing as I have noticed that my rear window does not get dirty like it used to before I installed it, so I guess the spoiler is breaking up the boundary layer.

2. Was this your first interstate trip where you recorded the mileage? I get 32 plus MPG when I am on a long trip traveling at 70 MPH. That's at least 5-7 MPG better than I get around town.

3. I have to agree that when traveling at 70 plus MPH on the interstate it doesn't take much to jump to 80 plus.

4. They are less expensive than a spoiler by a bunch and I also think it would look better with the shark fin antenna.

Just my 2 cents.
 

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Discussion Starter · #11 ·
I was going to get the rear wing when I went to buy it, but someone told me they were just for looks and served no value to performance. I wish the little fins worked like the wing, because I get a ton of road spray on the back and since I live in Washington, I don't see too many dry days except for summer. The rear wing really changes the look of the car, but I prefer it without the wing because it makes it look more retro looking. If they could come up with a clear wing, I would buy it. When the fins begin to loosen over time, I will either remove them or buy trim glue to renew the adhesion.
 
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I live south of you about 2 hours away in Olympia and I must say that the wing works great for keeping rain off the back windshield.

I do wanted to do the retro look to but I had to sacrifice style for practicality and in rainy washington sometimes thats always better.
 
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