Anyone using the Jet Performance Module?
TECH Fanatic
Joined: Jan 2007
Posts: 1,029
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From: LITH, IL.
The entire premise of the Tornado is based on better mixing the air fuel mixture by swirling it. While the theory might work on a carburated engine, a port fuel injection system (almost 100% across the board now on vehicles) does not mix the air and fuel until just before it enters the combustion chamber. Has to go through the Tornado, past the MAF (or equivalent, where there is likely a screen to smooth or unswirl the air to get a good read by the sensor), into the intake, then to each cylinder before the fuel is added. Go look at the path in your LS4, there is no way any of that air is being swirled by the time it gets to the intake valve. All you have done is add an additional restriction in your intake air path, increasing your pumping losses. Net result is less power than if you did not have it at all.
Common sense aside, Consumer Reports did a test of this and various other similar products and found either no gain in power or fuel economy. Just the opposite in fact, just like what you would expect to find.
If a collection of $5 in aluminum strips would make a difference in fuel economy every manufacturer on the planet would have something similar already built in. The marketplace would insist upon it.
Common sense aside, Consumer Reports did a test of this and various other similar products and found either no gain in power or fuel economy. Just the opposite in fact, just like what you would expect to find.
If a collection of $5 in aluminum strips would make a difference in fuel economy every manufacturer on the planet would have something similar already built in. The marketplace would insist upon it.
