[gksmith]

I noticed a company on Ebay selling TBS systems. They had 2 listings that seem to contradict each other.

Auction #1 - YOU ARE BIDDING ON A "HELIX" 1 INCH BILLET THROTTLE BODY SPACER: Throttle Body Spacer bolts in front of the throttle body to cause a turbulent spinning action of the incoming air as it passes through the throttle body. This causes the air/fuel mixture to atomize more completely, producing tremendous gains in mid-range power and overall efficiency. This effect will improve drivability of the vehicle as well as increase performance and quicken acceleration. Torque gains between 900 to 3500 RPM, increase towing capability. Gas mileage could increase 2-4 miles per gallon.

Auction #2 - YOU ARE BIDDING ON A "HELIX" 1 INCH BILLET THROTTLE BODY SPACER : Throttle Body Spacer bolts in front of the throttle body to cause a powerful smooth action of the incoming air as it passes through the throttle body. This causes the air/fuel mixture to atomize more completely, producing tremendous gains in mid-range power and overall efficiency. This effect will improve drivability of the vehicle as well as increase performance and quicken acceleration. Torque gains between 900 to 3500 RPM, increase towing capability. Gas mileage could increase 2-4 miles per gallon.

The second auction is cheaper - I guess you aren't paying for the helix.

The images shown for each auction are different - one has ridges the other is smooth. Not sure how the smooth would work as the stock throttle is also smooth.