• DEI, Ny-Trex, CryO2, Boom Mat, Radiator Relief Catalog


    DEI's new full color catalog is packed with 56 pages of tested and proven thermal acoustic performance products with the flagship brands enthusiasts have learned to trust for quality and performance.
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    NyTrex's critically acclaimed Triple Threat delivery system is now available for the Camaro 5 V6.
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    Check out the photo album follow the DEI Project Camaro from start to finish.
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  • Design Engineering Sponsorship Program: Team DEI


    The importance of grassroots marketing can never be underestimated. Design Engineering continues it's efforts of supporting local, national and international racer, project and show vehicle owners....
    Learn How to Join Team DEI

  • Buy NEW DEI Locking Tie Tool
  • Buy NEW DEI Titanium Protect-A-Boots spark plug boot protectors
  • Buy NEW DEI Quick Fix Tape
  • Puchase DEI Gasket Solution
  • Buy DEI Titanium Exhaust Pipe Wrap
  • Buy DEI Titanium Turbo Shield

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Welcome to sticky icon

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.

We now offer the full line of DEI, CryO2, Boom Mat, Ny-Trex, Radiator Relief and SPA Turbo products for sale directly from our online store. Make sure you’re on top of all the DEI news by subscribing to our DEI Newsletter. Don’t forget about our Twitter and Facebook pages!

Thank you for stopping by and please don't forget to send us your ideas, suggestions and comments.

~ Webmaster

DEI Sponsors Great American Racing Series

DEI Locking Tie ToolAVON LAKE, OHIO (APRIL 29, 2015) – Design Engineering Inc., (DEI), the market leader in performance tuning and acoustic products, is pleased to announce sponsorship of Circle Track’s inaugural 2015 Great American Racing Series (G.A.R.S.). This exciting series of six races is being billed as an affordable, high purse oval track race series for cars that are essentially street stocks. Drivers will compete for a purse of $30,000 per race with the winner receiving $5,000.  The champion will win $10,000 and a one day test session of a full bodied NASCAR style stock car at Daytona International

Developed with a mix of paved and dirt oval tracks in Indiana, Kentucky and Tennessee, the G.A.R.S. series kicks off May 9 at the Salem Speedway in Salem, IN. Two dirt races and four paved races are planned with the final event scheduled October 4 at the Memphis International Raceway. The top 15 finishers of each qualifying race will compete in the feature race which is expected to be 75 laps for tracks greater than ½ mile and 100 laps for ½ mile and under tracks.

Performance & Hotrod Business features Boom Mat

Performance and Hotrod Business LogoPerformance and Hotrod Business Magazine has published an article featuring the Boom Mat line of thermal acoustic control products. The article touches on all the main points of the Boom Mat "Science of Noise" and features many installation photos showing Boom Mat product in action. A must read if you're interested in learning more about the benefits of sound damping and acoustic control products.

Read more at:

Boom Mat Joins the Craftsman Restoration Rollout

The guys from Craftsman tools and Roadster Shop have teamed up to turn a '69 Chevy C/10 into a performance muscle truck fit for autocross. You can follow along with their build on the web series Craftsman Restoration Roll-out at as they turn the old C10 into the ultimate muscle truck.

The web series currently features 17 professionally produced episodes that cover everything from meeting the guys of Roadster Shop to finding the truck, disassembly, rust repair, concept design, body assembly, wiring and plumbing, and finally, interiors.

New Design Engineering, Inc. Catalog

DEI 2014 Product CatalogDEI's new 2014 full color catalog is packed with 56 pages of tested and proven thermal acoustic performance products with the flagship brands enthusiasts have learned to trust for quality and performance – DEI thermal tuning and Boom Mat sound control products, CryO2™ cryogenic cooling systems and Ny-Trex nitrous oxide systems and accessories, and DEI’s Radiator Relief performance cooling system additives are just to name a few. Divided into 15 easy navigable sections, the catalog features full color product photos accompanied with a full description of product benefits and features, color and size options, and product numbers for easy ordering. Throughout are helpful hints, testimonials, callouts, how-to images and test results to make this catalog a useful resource year-round.

This year, DEI boasts 20 new products including an expansion of DEI’s Titanium family of thermal product that offers maximum protection of sensitive components - Titanium Protect-A-Sleeve and 8” Protect-A-Boots.