How much power can you squeeze out of a 986 Boxster S?

[PaulE]

Originally Posted by neil_b

Part two is now up! Does fitting an underdrive pulley give more horsepower? We fit one then go to the rolling road to find out!

So if I understand correctly, the Dyno's calculated total horsepower is still 273 after fitting the underdrive pulley. Do you have the wheel horsepower figures for before and after? Would like to see if there is a small bump in the net amount reaching the rear wheels, that is what I think the underdrive pulley gives you. (Besides saving your power steering pump at the track.)

PS, great video! If you decide to improve editing quality as discussed in the comments to the video, that would be a bonus, but they are teriffic as is!