Each supercharger kit comes with 1 tune, any additional tune requires purchasing.

• Target boost
  • 380/425 kit max 8 psi
  • 460 kit max 11 psi
  • 500 kit max 14 psi

Please reference our pulley page in determining your appropriate pulley size and elevation to match your tune.

https://www.packardperformance.com/collections/rzr-pro-r/products/rzr-pro-r-supercharger-pulleys