Copyright © Banshee Supercharger, Inc.

We are able to keep costs down by designing around the Eaton M90 3rd generation supercharger that was used in the Ford T-Bird “supercoupe” from 1989 to 1995. The inlet (must) be the oval as in late 1995 Ford went to a rectangular that is (not) “compatible” with this kit.

Banshee Supercharger Inc Website



The Supercharger can be found on Ebay, Craigs List, or your local wrecking yard at a cost of $200 to $350.

Where can I purchase the Supercharger?

Customer Questions and answers

A Supercharger Kit Designed For

The Ford 4.0L Single Overhead Cam Engine.

This kit (less) Supercharger has been in production since June 22 2005

What Supercharger is required?


Stage-3 “up-grade

If you are looking at the “Stage-3” you are getting anxious to get the most you can out of your “Banshee Supercharger Kit”. Please review the information shown on the (stage-2) page and add to it the following:

Along with the cooling of the supercharger discharge air and to maximize your power there are a few more considerations for you.  First off you will need to increase your fuel supply to handle your new demands, your injectors, maf, and a “high performance tune”, will be needed. As supercharger pulley size is reduced and the possibility of slippage of the serpentine belt becomes a factor, the “Dual Pulley” set up may be needed.     

One of the first things you should do when you increase boost or performance is to relocate the “intake air sensor”. On the stock setup it is located in the “MAF” and works well to read intake air temperature for the computer. When you modify by adding a supercharger it is (best) to read the actual temperature of the air that enters the engines cylinders. This is accomplished by installing the “Air temp sensor” into the discharge side of the supercharger. I have provided a 3/8” FIP location in the manifold.