Fast UTV / aRacer

UTV ECU Performance Tuning

Stand-alone engine management and vehicle-specific tuning for Polaris RZR and Can-Am Maverick X3.

An aRacer ECU, configured by FastUTV for your vehicle, with three FastUTV tuning maps. The current ECU-and-three-map package is $2,369 USD across our Can-Am and Polaris aRacer packages.

One ECU package. One fuel family. Three maps.

ECU and tuning

The package includes the application-specific aRacer ECU and three FastUTV maps. Supporting hardware, accessories, installation and dyno time are separate from this price.

Gasoline only

Choose three gasoline maps matched to your vehicle and fuel requirements. Octane choices such as 91, 100 and 110 are examples to discuss with FastUTV; the final map settings depend on your build.

E85 only

Choose three maps using E85 as the base fuel, with power levels configured for your vehicle and supporting hardware. Boost levels apply only to suitable boosted builds.

Gasoline and E85 cannot be combined in the same three-map package. This aRacer offer does not provide flex-fuel operation.

Shop by vehicle

Start with your vehicle family, then confirm the exact year, model, trim, ECU connector, wiring, fuel system and current modifications on the selected product. A collection is a starting point, not a fitment guarantee.

Configured around your build

  1. Select the aRacer listing for your verified vehicle application.
  2. Choose one fuel family: gasoline only or E85 only.
  3. Provide your vehicle year, model and trim, current modifications, fuel-system details and map requirements.
  4. Confirm the calibration and any separately required hardware with FastUTV before installation.

Calibration and required supporting hardware depend on your vehicle, fuel and goals. For an existing big-turbo build, FastUTV reviews the actual turbo system and supporting components. The package includes the ECU and three maps; a turbo kit is separate.

Shipping options and rates are shown at checkout. Local pickup is available after order-readiness confirmation. See the current shipping and pickup policy.

Acclivity is a separate package choice

Acclivity Axiom options include ECU-only hardware and FastUTV-tuned packages. Their prices, software activations and included harnesses, sensors, injectors or other hardware depend on the exact model and selected package. The $2,369 aRacer ECU-and-three-map offer does not define the contents of an Acclivity package.

Required software activations are included where the Acclivity tuned-package listing states this. ECU-only configurations need an appropriate calibration and may require separately purchased activations. Check the selected listing before adding hardware or entitlements.

Before you order

Can I combine gasoline and E85 maps?

No. Choose all three maps within one fuel family. The aRacer three-map package is not a flex-fuel package.

Are injectors, pumps or installation included?

Supporting hardware, accessories, installation and dyno time are separate from the aRacer ECU-and-three-map price. Requirements depend on the vehicle, fuel and modifications.

How do I choose for my build?

Start with the exact vehicle listing and check your year, model, trim and current hardware. Add your vehicle and build details in My Garage, or contact FastUTV to review your fuel choice, modifications and goals before ordering.

Contact FastUTV with your vehicle and tuning questions.

Need tuning for an ECU already installed?

Explore FastUTV dyno testing and tuning appointments in Corona for factory or standalone ECUs. Appointment totals list tuning labor and reserved dyno time; required hardware, unlocks, credits and adapters are separate. Confirm your vehicle, current ECU, fuel and modifications before choosing a service. Purchasing an ECU package does not book an appointment.

Shop all UTV ECU tuning and EFI systems

FastUTV / Ride inspiration

Build for the ride ahead.

Start with your vehicle and riding goals. Keep your parts plan together in My Garage.

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