DESCRIPTION
| ECU Power Stage | HP | WHP | Fuel (Octane) | Recommended |
|---|---|---|---|---|
| Stock | 110 | 91 | 91 | Stock or Aftermarket |
| Stage 1 | 114.5 | 96 | 91 | Stock or Aftermarket |
| Stage 2 | 117 | 97 | 91 | Aftermarket Exhaust |
| Stage 3 | 120 | 99 | 91 | Aftermarket Exhaust & Intake |
EVP was first to dyno and tune the RS1. Gains were made via timing, fueling, torque-limit changes, rev limits, and speed limits. Fan-on temperature is lowered by 20 deg F and fan on/off temps can be set per customer. EVP applies Polaris Bosch ECU expertise from automotive work to the SXS market.
- Revised decel fueling to remove lean pop with aftermarket exhausts
- Rev limiters raised
- 100% throttle enabled
- Improved throttle response in all modes (E-Gas settings)
- Ignition timing advanced and optimized for 91 Octane
- Fueling adjusted for intakes, exhausts, and cat deletes
- Usually no piggyback fuel controller required (mods must be compatible)
- Engine speed torque limiters removed ("Shaft Saver delete")
- Vmax delete (speed limiter removed)
FITMENT
2018-'22 Polaris RZR RS1
Manufactured by Evolution Powersports. Official specs and resources: EvoPowersports.com.
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