I would like to hear some input on this as well, I just spent three hours researching TC's yesterday and I have it narrowed down to 2 the Huges XTM and the TCI maximizer street. Here is what the websites say about both.
HUGHES
A New Generation of the Torque Converter
Hughes Performance would like to introduce you to the XTM & XFM series, torque converters. Simply put . .
There is no other like it!
Let's first understand the main objective of the converter: A fluid coupler designed to allow the engine to idle smoothly while in gear and transfer (convert) the maximum amount of torque (power) from the engine to the drive wheels. A torque converter designed to operate in a light duty 3/4 ton vehicle should not be the same as a converter used in a heavy duty 1 ton dually or even a class "A" motor home. But . . . that is exactly what the industry has dictated to us for years . . . until now!
This "New Generation" torque converter is available for General Motors, Ford and Chrysler transmissions. The "XTM" is slightly higher stall for gas engine application and the "XFM" is a lower stall for diesel engine applications.
Stronger Than Stock or Heavy Duty
Built with a heavy duty one piece hub and balloon plate, heavy duty sprag, silicon spot welded fins in turbine and cover, providing strength beyond compare.
Longer Lasting
Because of the increased cooler flow, the transmission and converter will operate cooler, increasing the life of the transmission and converter.
More Power
The combination of the stator and specific application fin angles applies maximum power to the wheels. This allows you more available engine power.
Operates Cooler
You no longer need to be afraid of the "long grade" with the "heavy load". The XTM and XFM series converters run 7 quarts of fluid more per minute than original equipment or stock application.
More Efficient
This new generation stator (torque multiplier) transfers power from the engine to the wheels more efficiently.
XTM/XFM
These units comprise our finest tow convertor technology. All units are designed with Heavy Duty use in mind. From extra brazing to greater fluid capacity, bearing assemblies. special stator configurations and design increase torque multiplication, allowing more towing capacity and in most cases, increased gas mileage.
For the most significant towing by way of diesel engines that have their output increased, Hughes also offers the super-duty XFM series for the Ford Powerstroke, the Dodge Cummins and the GM Duramax. These units are built to take all the punishment these engines can create by using billet steel covers that cannot flex or distort even under the most challenging situations. Instead of trying to "lockup" the converter for increased efficiency and fuel mileage with any type of single disc, we have replaced it with a triple-disc design, which significantly increases the converters ability to endure the increase in torque and horsepower and still deliver top performance for your diesel application.
TCI
This Maximizer™ Street Torque Converter has much the same performance characteristics as our standard Saturday Night Special® series for cars, but with extra reinforcement and thicker mounting surfaces to withstand the additional load and vibration put through the drivetrain by a truck with performance modifications. By providing additional stall, your truck will see better initial takeoff and will not lug the engine when using big tires. Special attention is made to match the converter to the power range of most trucks that do double duty as an off-road and daily driver. Improved rear wheel horsepower and elapsed times are a result.
Built with anti-ballooning plate