I just dynoed here at my shop a 2011 5.0 6 speed with Bama tunes , 93 Race tune was way lean 14s , which may have been a simple mistake on loading the CAI value file for the airaid intake , but good thing the guy brought the car over to check it , it only went 375rwhp on that tune , put the 93 Performance tune in and air/fuel was good about 12.5-12.9 and went 392rwhp
So then I called them and told them about the air/fuel on the Race tune , after explaining to them what we were dealing with they emailed a new tune and this next pull the air/fuel mirrored the Performance tune now , but I am guessing even with 93 octane it had too much timing in the tune for the fuel that we have around here cause it only dynoed 390rwhp with their Race tune compared to the 392 rwhp Performance tune ....
So then I called them and told them about the air/fuel on the Race tune , after explaining to them what we were dealing with they emailed a new tune and this next pull the air/fuel mirrored the Performance tune now , but I am guessing even with 93 octane it had too much timing in the tune for the fuel that we have around here cause it only dynoed 390rwhp with their Race tune compared to the 392 rwhp Performance tune ....