Maroon vintage 1939 Chevy coupe with chopped top, small block chevy engine, and EFI parked on a paved driveway with grassy landscape and trees in the background.

Precision Tuning & Performance Upgrades for Classic Cars

At Truth Dyno & Performance, we specialize in classic car repair, tuning, and performance upgrades for hot rods, muscle cars, and vintage vehicles in Medina, MN. Whether you need a carburetor tune-up, Holley EFI installation, or Mustang chassis dyno testing, our expert team has the knowledge and tools to maximize your car’s power and reliability.

Holley EFi logo in black and red text.

Holley EFI systems offer numerous advantages, including improved fuel efficiency, increased power output, and reliable start-up performance. Our local Holley EFI services leverage these benefits, transforming your classic car into a modern powerhouse. Experience enhanced throttle response and better overall performance that modern technology brings to vintage vehicles.

Tune your existing Holley EFI System for power and drivability. Whether it’s Sniper, Terminator X, HP or Dominator. Starting at $600. Turbo, Nitrous, and Superchargers are additional charge.

Install a Holley EFI System - Increase your drivability, efficiency and tuning options. Starting at $1,500. Varies depending on the Holley EFI type, fuel, and ignition systems.

LSX logo with black and red lettering on a white background.

GM LS Tuning with factory ECM

Got a GM LSx with a cam swap, headers, or other modifications and a factory ECM? We'll tune your vehicle using HP Tuners software.

Holley logo with red, white, and black horizontal stripes

CLASSIC / HOT ROD UPGRADES AND MAINTENANCE

Most shops won’t work on a classic car with a carburetor and a distributor, a modified vehicle, or a custom build hot rod. We understand the challenges, and we can help!

Logo of MD Mustang Dynamometer with red and black text on a gray background

dyno tuning

Let us tune your vehicle or bring your own tuner. Either way, our Mustang MD-150 dyno provides data for tuning decisions so can get your car dialed in. No guessing, just facts!

Holley EFI

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HP Tuners

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LSx

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Hot Rods

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Muscle Cars

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Turbo

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Nitrous

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Supercharger

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Holley EFI ✳︎ HP Tuners ✳︎ LSx ✳︎ Hot Rods ✳︎ Muscle Cars ✳︎ Turbo ✳︎ Nitrous ✳︎ Supercharger ✳︎

A restored black and white vintage 1957 Chevrolet BelAir car with red interior, gold accents, a 400 cubic inch small block chevy engine from Blueprint Engines, and Holley Carburetor parked outside a building with wooden and gray siding.

“My 1969 Camaro with 383 small block and a Holley fuel injection system has had drive-ability issues for many years. I had been to a few different tuners with less than optimal results. Doug was able to get the car running perfectly. He really spent the time and effort dialing the car in. It now runs like a new car. What an amazing transformation”

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Get In Touch

If you're interested in working with us, complete the form with a few details about your project. We'll review your message and get back to you within 48 hours.