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ACE 900 ECU re-flash

Make more horsepower more top speed and increased throttle response all while keeping your engine running cooler and safer with a simple plug in.

-Engine speed and torque limiters removed.
-Raises rev-limiter to 9200rpm.
-Enhanced timing curve for increased throttle response and power.
-Enhanced fuel curve for cooler running and more power.
-Cooling fan turned on 20 degrees cooler.
-Drive by wire system adjusted for maximum performance.
-Fan temps lowered for a cooler running engine.
-Simple plug in installation.
**See below for more info.
**Due to the increased timing 91+ octane fuel must be used.

-Stage 1 This is for a vehicle with stock intake and exhaust.
-Stage 2 This is for a vehicle with intake and stock exhaust.
-Stage 3 This is for a vehicle with aftermarket exhaust.
-Stage 4 This is for a vehicle with aftermarket intake and exhaust.
Was: $399.99
Sale: $299.99
Save: 25%
Save: $100.00

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- Select Tune -
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- Polaris ECU Core -
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Free standard shipping We will select the shipping method.


ECU core options: (International customer NO CORE OPTION AVAILABLE) Option 1: Pay no core charge. Send us your ECU. We will re-flash it and send it back to you within 1 week. Option 2: Purchase Outright - No core is required to be sent in - Raises kit price by $470 Option 3: We send you a programmed ecu and you pay core charge of $470. You send us your ECU as a core within 2 weeks and we refund your $470 core charge.

Closed course Racing Use Only - Racing parts are those that have not been proven by their manufacturers to not increase vehicle emissions. These parts are not legal for use on any pollution-controlled vehicle in California, and they are required to be labeled as such when they are offered for sale. These parts may only be used on closed course racing or competition vehicles, or on off-road vehicles manufactured prior to the ARB's introduction of off-road emissions standards.



 WARNING: California Residents, this item is subject to Proposition 65 regulations for cancer and reproductive harm.


  • ACE900-ECU1
  • ACE900-ECU1
  • New

Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W6.0000” x H6.0000” x L6.0000”
  • Free standard shipping We will select the shipping method.

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