I'm posting to this old thread because I haven't seen the above comment/opinion anywhere else. I recently installed the Lund flex fuel tune in my GT350 and love the way it runs. I also tranferred the JLT passenger side oil separator from my departed Boss onto the Shelby. I just checked it after about 500 miles and found a surprising amount of oil, much more than I used to get with my Boss and I have run this car very easy. My question, in light of the above comment is: would I be better off not running the separator and allowing some oil vapor to enter the intake tract to provide lubrication?
Hell no, oil and oil vapor promote detonation, especially when tuned or running hard for extended periods.