We at design engineering, Inc. (DEI), one of the foremost suppliers of thermal tuning products, are very proud to welcome you to our website.  We have listened to our customer comments over the years and tried to incorporate All that We have learned from them.  our goal with this site is to provide education and information on our products.  please take note of such features as the language translation bar in the top right corner of every page and our social networking connections offer many options to stay connected with DEI.  We have improved our store Finder to be more user friendly especially for Canadian and other international friends.

• Design engineering
• Polaris Slingshot
• Heat Control Kit

Design engineeringDesign Engineering