Relentless Motorsports TX

ECU repair, automotive electronics and real shop projects from Relentless Motorsports TX in Dallas, Texas.

We repair supported engine control modules, failed capacitors and circuit-board damage, and offer proprietary Toyota and Lexus hard-shift repair. Nationwide mail-in service is available for supported modules. We inspect the module and repair what is needed.

We also provide in-person feature coding for supported Porsche, BMW, Lamborghini and Audi vehicles.

Watch repair case studies, Lexus LS430 projects, Toyota Supra and JZ builds, and vehicle coding work from our shop.

Need service? Visit https://www.relentlessmotorsportstx.com or email salesrmstx@gmail.com with your vehicle year, make, model, symptoms and module details. Contact us before shipping.

Call (972) 779-6862 | Mon–Fri, 9am–6pm Central

Subscribe for real automotive electronics work and enthusiast builds.