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Tweak'd Performance | Custom Wiring Harnesses | Summerville, SC

The Only Name You
Need To Know

We offer the best, highest quality wiring harnesses for your engine swap. Choose from our plug-and-play harnesses in our store or contact us today to discuss a custom-made solution for your project.

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Tweak'd Performance | Custom Wiring Harnesses | Summerville, SC

Welcome To Tweak’d Performance

Tweak’d Performance started out with humble beginnings in 2004 in a small two-bay shop in rural Vermont, dedicating our time from day one to figuring out solutions to difficult engine swaps. Back then we probably would never have believed that our little shop would evolve into the leading producer of Toyota swap wiring harnesses!

We’ve made it our goal to listen to our customers’ feedback and help them get what they need, and the overwhelming call for a good solution to engine swap wiring had to be answered.

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