Performance Work.

Whether it's bolt-on upgrades, fuel system overhauls, or full power builds — HD Garage handles the work that turns stock cars into something serious. Done in-house, dialed in by people who actually drive what they tune.

What's Included

• Bolt-on power packages (intake, exhaust, intercooler, charge pipes)
• Fuel system upgrades — port injection, methanol, E85 conversion
• Turbo upgrades — twin upgrades or single conversions
• Custom dyno tuning to dial in the build
• Supporting mods for big power (clutches, axles, cooling)
• Full performance diagnostics before and after work

Who It's For

• BMW M & S series owners wanting more out of their platform
• Built engine owners adding the right supporting mods
• Customers chasing a specific HP target with a proven build path
• Anyone tired of "tuner shops" that don't actually know the platform