986 2.5 underdrive pulley dyno graph

[Gilles]

Bobiam,

Two years ago I installed a (BBI) UDP, the main reason was to reduce the accessories because I was overheating the steering pump at the track.

The first failure was the high pressure fitting at the steering rack, the second failure was melting (somehow) the bottom of the reservoir with an o-ring failure and lastly the dealer ended replaced the PS pump along with some of the high pressure lines that were damaged when the hot fluid leaked.

However, I am planning to install a cooler on the low pressure return line (along with an Accusump) before heading back to the track
.

[Jake Raby]

Smart people understand the torque increase is where its at...