We had a chance to pick up a dyno sheet from a very recent 2.1L "twin screw from another major manufacturer" install on a 2002 GT. Since the TTI 1.8L is constantly being compared to that "twin screw" 2.1L, we thought we would do a comparison of our own. 

Below are two dyno sheets. One of a 2002 GT equipped with a 2.1L "twin screw" on a Dynojet Dynamometer.

The other is of a TTI 1.8L Magnuson Generation 5 kit on a 2003 GT on an MD1750 SE Mustang Dynamometer. Both are at roughly 10 pounds of boost.  How can this be?  A smaller displacement blower competing on power with a "twin screw" 2.1L? TTI believes it has to do with the design of the intake plenum which has NO right angles (sharp corners) to go around. The air makes a smooth transition into the supercharger.The dual flow intercooler design in the kit, looses less than 1 pound of boost, and keeps the AIC COOL. All those "heatin Eaton" stories you keep hearing about? A thing of the past.

 So...here they are. The 2.1L "twin screw" first...398 x 376. 11 pounds of boost. Excellent.

 Now the Tork Tech Inc. 1.8L...408 x 399. 10 punds of boost.

Is it that we don't like "twin screw technology"? Nope. Look in our "Supercharger and Turbo Section" in the Image gallaries. You will see Roush, KB, Hellion, Vortech, we do them all. The question I kept asking myself after seeing these results was has someone come up with a little bit better mouse trap. Did 30 years of an engineering background that went in to this design pay off? So far and from what I have experienced, it may just be. Think about this for a minute....an 18% smaller supercharger, making the same if not better power. Best of all, it is more economical and fuel economy remains excellent, or in one case we know of, improved. Compare option for option and you will find the TTI cost is substantially less. HP per dollar can't be beat. 

Inlet comparison

As you can see, the "twin screw" inlet, is pushed into the firewall as is very narrow at the inlet and as a result limits the volume of air taken in. 

The TTI inlet. 3 times the volume. Because the blower sits a bit forward and runs on it's own independent drive, is allows much more room for the inlet plenumb.