sorry but this is justa waste of your money. They don't work at all.

 

What the hell is a helix power? Never heard of that.

 

in a nutshell
you will have more success improving MPG
if you concentrate on making the tires roll easier
making the truck slip through the wind
and changing your driving habits to be more like a 'HyperMiler'.

More than a dozen tips that will pay for themselves
at this LONG read:

https://dodgeforum.com/m_447500/tm.htm

 

The Helix Power Tower, its a TBS, I just had a whole posting asking about it if anyone used one. More less what I got was they make a better paper weight then anything and if you wanna play with the TB then go with a new FastMan TB, Oh yeah and they make a neat WHIISH sound as Frenchy noted and someone else said if you strap one to your **** it'll whistle, haha

 

Not trying to advertise but Sports Racing Fuel (company I work for)offers a product called SURA (Sports Unleaded Racing Additive). I use it in my truck at all times. I have a 2000 dakota 4.7, intake, muffler and thats it. I was getting 14mpg around town (maybe heavy foot? don't know what the avg is) but when I put 1 gallon of this stuff in I got 1.5-2 mpg better! Its not even made expecially for better gas milege but for more horse power (which you can fell in the seat for sure) but it makes the fuel burn slower so you use less. It wouldn't be a good idea to use it strictly for better gas milege because its more expensive then gas but the performance benifits are well worth it. When I put the muffler and intake on I couldn't really tell if it was any faster. It sounds faster but we all know how fast those rice rockets are on the freeway when they are trying to catch up to us! This stuff works, check out www.sportsracingfuel.com for more info or call me at the office 714-996-RACE. We havn't realest is yet so you can't find it anywhere but it will be bottled and for resale soon.

Hope that helps