tornado
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Freshman User
Joined: Mar 2004
Posts: 43
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From: Yuma
tornado
Ok i have heard of this tornado and seen infomercials of it everywere and it clames that it works but i am still skepticle. i see it working fine on a fuel injected vehicle but can it really work for a carberated one. and if the tornado does really work is it worth the 60 bucks it costs. i was wondering if anyone out there had experience with this thing.
Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
I think it works better with a carb than with EFI, but I don't know if it is possible to justify the 60 bucks for one. A friend of mine has one on his 350 Chevy, and is getting around 17-18 MPG with an automatic in normal city driving, which is much better than I'm getting with my 302. Theoretically it should work, I just don't know if it's worth it. I saw in some import tuner magazine they dyno'd a car with and without it, and with it, they actually lost horsepower. I won't buy one (or two since I have two air tubes) because I just can't justify the cost, and I don't have the proof that says they work.
Posting Guru
Joined: May 2003
Posts: 1,211
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From: York, NE
I have tried it. It hurt my mileage and power. Wish I would have found this site 6 months sooner and saved my money. Don't do it. Spend the monry on a true cold air intake instead, much better results.
Elder User
Joined: May 2002
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Like Rat said. Early (upstream) turbulence is a bad thing and just restricts your WOT airflow.
Good turbulence is the kind that happens *in the cylinder".
You get it with smaller intake ports, lower lift valves, or special intake ports designed to swirl or tumble the mixture. When the momentum of that swirl gradually dissapates as the piston comes up, it converts into the good kind of turbulence that you want for a good fast flame speed.
Of course, too much swirl/turbulence can be bad, too. Like the "May" combustion chamber in some mid 80s (I can't remember the years) Jaguars. It had 12:1 compression, incredibly high swirl and flast flame speed, but the turbulence was soo high, they had excessive heat lost to the coolant, losing efficiency.
Bottom line:
upstream turbulence = bad
in-cylinder turbulence = good (within reason)
Good turbulence is the kind that happens *in the cylinder".
You get it with smaller intake ports, lower lift valves, or special intake ports designed to swirl or tumble the mixture. When the momentum of that swirl gradually dissapates as the piston comes up, it converts into the good kind of turbulence that you want for a good fast flame speed.
Of course, too much swirl/turbulence can be bad, too. Like the "May" combustion chamber in some mid 80s (I can't remember the years) Jaguars. It had 12:1 compression, incredibly high swirl and flast flame speed, but the turbulence was soo high, they had excessive heat lost to the coolant, losing efficiency.
Bottom line:
upstream turbulence = bad
in-cylinder turbulence = good (within reason)
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reubenalex
Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150
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Aug 13, 2003 07:01 AM
