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thstone · 05-27-2016, 07:42 PM

Let's be clear - there is no decrease in cooling system performance when using a UDP.

I have driven my Boxster repeatedly on the track (continuous full throttle and shifting at redline) in weather up to 110F and there was zero difference in the cooling performance as compared to a full size pulley. Someone can "theorize" all they want, but the reality is that the UDP doesn't decrease cooling, power steering, or a/c performance.

Every Spec Boxster in the country runs a UDP (and many street cars do also) and if there was some huge downside (like over-heating the engine), we'd have heard about it by now.

05-27-2016, 07:42 PM	#10
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	Let's be clear - there is no decrease in cooling system performance when using a UDP. I have driven my Boxster repeatedly on the track (continuous full throttle and shifting at redline) in weather up to 110F and there was zero difference in the cooling performance as compared to a full size pulley. Someone can "theorize" all they want, but the reality is that the UDP doesn't decrease cooling, power steering, or a/c performance. Every Spec Boxster in the country runs a UDP (and many street cars do also) and if there was some huge downside (like over-heating the engine), we'd have heard about it by now. __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor Last edited by thstone; 05-27-2016 at 07:45 PM.