Denny T Performance started in 2006 as a grass roots effort to fulfill the horsepower hungry needs of a small group of 1st Generation Cummins owners. Within a short period of time, the popularity of products quickly proved to be more than what a small “run from home” business could support.
In 2009 Dennis (AKA Denny T) opened up Denny T Performance & Machine in Woodway, Texas. Starting in a small 1500 sq ft building Denny T, now doing business as Madden Manufacturing LLC, is a 6000 sq ft state of the art CNC Machining Facility.
We look forward to providing you with the best products and best service available. Thanks for visiting. If you are interested in any additional products please call us at the office at 254-836-5019.
Denny T Fuel Pin Installation
Click the link to download Denny T fuel pin installation instructions
AFC Delete Installation
Click the link to download Denny T AFC Delete installation instructions
What Our Customers are Saying
“Got my shirt and grid heater delete in the mail ???? awesome quality on the grid heater delete! Shirt is awesome! Thanks!”
“Awesome product easy installation and superior quality!! I need 3 more!”
“Finally got around to getting my power pin put in and man what a difference. Great product!”
“Big shout out to Denny T Performance for the great parts and friendship!!”
Browse Our Full Shop or Give Us a Call - (254) 836-5019
We truly appreciate the support and loyalty from our customers. You have helped build this business to what it is today. We look forward to providing you with the best products and best service available.