All 2020-22 Pro XP Models are wideband type, with the CA version having an evaporative canister, so all Pro XP models will have a blue O2 sensor.
All 2021 RZR Turbo & Turbo S models are wideband type, with the CA version having an evaporative canister, so all 2021’s will have a blue O2 sensor.
For 2019-20 Polaris Turbo and Turbo S models made for California have evaporative emissions. In 2020 this still stands, but we see these models move into non CA models and come in a 49 state version. These are all wideband type ECU’s. Most components are the same but some have changed. We have full tuning capability of this ECU and they run very well. Below are two images showing telltale ways to determine if you have an evap model. The first image shows the purge valve just above the clutch cover, in the fuel line. The next image shows the blue covered wideband O2 sensor. Evap models are normally found in California or surrounding states.
For those not familiar with evaporative emissions, it’s the act of keeping raw fuel vapors from being released to the atmosphere when being returned into the fuel tank. The evap models use the same hard parts as all other models with the biggest difference being the electronics. The internal workings of the ECU are different as it’s a wideband O2 setup. This means we have specific programming just for the 2019+ evap models. This model also uses a PWM (pulse width modulated) fuel pump. This is because the fuel system now has no fuel return, so fuel pressure must be regulated with this module to be lower under low load and higher under high load.
Is having a 2019+ evap/wideband model bad? We see this question often as normally people try to get around models with more strict emissions. It’s actually quite the opposite with the RZR Turbo. Having a purge valve and a few more electronics can always pose more of a problem down the road with more components to fail but you now have a full wideband setup. The wideband setup will make active adjustments to keep your AFR on target with what your tuner (or factory ECU) demands. This also allows you to view real time AFR on your AA custom tuned PV3 gauge. The PWM fuel pump is also a more capable pump and will ramp pressure up more than the non-evap models. We have yet to find the evap model as a disadvantage and is actually a slight advantage over the non-evap models due to the wideband capabilities.
