The HP chart capacities are based on running e85. If you will be running pump gas, multiply the HP capacity by 0.70 for a more accurate rating.

Example: A BW S369 SX-E turbo rated at 1000 HP on e85 will be rated at 700 HP capacity on pump gas (1000 x 0.70 = 700 HP)

*Subtract out 15-20% for WHP