This is a reply to your question from 2004-06-09 15:45
QUESTION: [I installed a Hypertech 160* thermostat into my 2004 Pontiac GTO.
What fan temperature settings does your company recommend?
I would suggest setting fan 1 on time at 186, off 179, fan2 on 195 and off 187.
Thank you for your interest in DiabloSport!
Johan, a proud member of the DiabloSport Support Team
Sure you can "do it yourself" - No need for a custom tune for this change. Changed mine a couple of times and finally settled (Stock A4) - on the following settings:phobos512 said:Here's a question on setting the fan temps - do you have to do this using a custom tune with the Pred or can you modify their performance tune?