browse our services
Module Tuning
Restore fuel injector efficiency with our ultrasonic cleaning service, improving engine performance, fuel economy, and throttle response.
Module Unlocking
Get OEM or pre-programmed ECM replacements for seamless installation, ensuring optimal engine control and reliability.
Module Cloning
Boost horsepower, throttle response, and fuel efficiency with our performance ECU tuning for Mopar, Volkswagen, GM, Ford, and more.
Diesel Tuning
Easily transfer factory settings and security data to a new ECU or control module, ensuring a hassle-free, plug-and-play replacement.
about us
Established in 2010, Johnson Customs LLC specializes in Automotive module tuning and cloning. With over a decade of experience, we've honed our expertise in enhancing vehicle performance and functionality through cutting-edge technology and meticulous craftsmanship. Our dedication to quality and customer satisfaction drives us to deliver top-notch solutions tailored to meet your automotive needs.ustomer like a member of our extended family.
satisfied clients
Quick & Reliable
We are available 24/7 via fax, email or telephone
Location
1010 S Cecelia St, Sioux City, IA 51106, United States of America
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