I have owned Corvetts and Camaros. I now have an 06 Mustang GT. So far I am very pleased! It is my first Ford product.

The questions are, What is a Modular motor? What does PI mean?

Thanks,
Roy

 

Modular "mod" motor is basically just a motor where some parts are swappable and addaptive between the different line up of engines, IE: v8 to v10, or v10 to v8.
If you are looking for more info check this out:
http://www.answers.com/topic/ford-modular-engine

PI is Performance Improvement. the 99+ GTs had a few different parts on them which gave better peformance. The heads, intake, and a few other things were switched from the 99+ from the previous 4.6l engines.

 

Thanks, Matt. I think I have become a Mustang convert!!
I have the shop manual and wiring diagram manual and I just love pointing
out features to my girl friend. I think shes impressed, maybe.

Roy