They also have to use a common denominator calibration for thousands and thousands of PCMs for all types of weather and elevation. What they program at the factory has to work for everybody, everywhere. Thus, it won't be great for anyone anywhere.

 

I installed the MotoBlue. I love it. No problems what soever and the performance increase was definitely noticeable.

Here's a link with installation instructions if it helps.

http://www.cherod.com/mustang/HowTo/Pulleys.htm

 

since the water pump pulley changes, is there a rise in block temp? If so, will this decrease the life of the engine?

 

I noticed an increase on mine(temp gauge sits at 12:00). Any extra strain on the engine will shorten it's life, just take care of it and it will last long enough.

 

I could be mistaken but I believe my temp gauge (although considering it is a factory piece and readings are at best rough estimates) sits at almost 12:00 without any kind of tune or modifications.

 

Hi there

I've got the Saleen UDP's on my Saleen S281 and I've never seen my temperature guage hit 12:00 it tends to sit at 11:00 - 11:30, so I guess this is good?

 

Mine never chaned from 11 - 1130 after adding the Steeda UDPs...

 

Just installed mine and gave it an hour of flogging in the backroads. No change in the temp gauge for me. Pulls harder in the upper rpms (~3k and up). No regrets here.