just wondering how much 4'' will lower egts. im running 3 with the areo turbine and love the sound. but im not in this for sound! just wondering if it is like 50 degrees or 150. i know a turbo upgrade would help alot but my pockets are not real deep at this point.

 

You could see up to a 100+ degree drop.

 

my buddy went from about 1700max to about 1600 max when he switched from 3 to a 4