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Originally Posted by HockeyFreak
Diamond Dog, have you looked into one of those Tornado fuel saver things? I have heard that they help a little.
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Any fuels savings with the Tornado/Spiralmax/whatever are purely coincidental at best. Since those things hit the marked a few years ago, there have been several studies done as well as many articles by automotive engineers and mechanics which debunk their effectiveness. If anything, they have been known to be counterproductive depending on the design of the intake.
Another side effect is the quality of the little device. There was one report I read from a Z28 board a year ago where the owner had installed a Tornado/Spiralmax doohickey and it shed one of the little vanes which was then sucked into his engine
He was not a happy camper.