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For 3.8, 4.6, and 5.0 cars you can expect -


-rev limiter raised to 7200rpms (TCU tune may be needed to take advantage of higher RPM limit)

-2 step (3.8)

-pops/bangs/crackle on deceleration

-SHOW tunes are compatible with 87-93 octane fuel

-GO tunes are compatible with 91/93 octane fuel

-CUSTOM tunes are compatible with 91/93/E85 fuel


Your factory warranty will be void upon loading a tune from any aftermarket company and Alphaspeed is no exception.


Pay close attention to pricing info. Prices may change depending on options chosen for your configuration.


Please note that all sales are final for all tuning services and/or ECUs provided by Alphaspeed Midwest. Deposit payments can be made HERE to start your appointment process if opting for an in-person tune. Full payment is required prior to any ECU tune or modification. Professional removal/installation of your ECU is recommended if you plan to mail in your ECU or are purchasing a spare: working with your vehicle's wiring and powertrain/drivetrain management system requires specialized training and experience. Some listed features may not be applicable to each specific year/engine/transmission. Alphaspeed Midwest is not responsible for damages incurred to your ECU, vehicle, or vehicle components due to inappropriate installation.

Hyundai Genesis Sedan Tune

  • An ECU tune is a cost effective way to safely add some flair to your current setup while still maintaning stock-like drivability and fuel economy.



    Simply remove your ECU, ship to my location, then have your ECU reinstalled when it returns. Your engine configuration (3.8, 4.6, or 5.0) determines what is modified in your tune. All SHOW tunes are configured for use with 87-93 octane fuel. All GO tunes must use 91/93 octane. All Custom tunes must use 91/93 octane or E85 (determined at the time of your tune).

  • Upon purchase, you agree to Alphaspeed Midwest Policies, Releases, and Terms and Conditions as well as any terms listed on documents provided to you by ASMW. Prepaid/free shipping is only available for contintental US based customers. Please contact us before purchase for options if you're based outside the US.

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