I opened a new tune file today and looked under the OS Tab. I see 4 boxes that have a Apply Mod. The first one is Speed Density -RTT. What Does the Enhancement do, change something in the tune files? I went back and looked at other tune files and found a 2008 Tahoe I tune and it has the Speed DensityTune 1.hpt Enhancement too. Did I not apply an Enhancement that I should have?
The others are 1 bar 2 bar and MAF. So what does the MAF do for the Enhancement?