smanierre
Autocross Champion
I just installed a Cobb Big SF intake and put on the corresponding stage 1+ big sf tune. I noticed that while maintaining speed or slightly accelerating, my AFR varies from 13-16. At first I thought maybe my foot was moving on the gas pedal but it does the same thing with cruise control too. Is this a common issue? Also have no codes related to this and occasionally when I give it gas it bogs down and drops to an 11 afr then picks back up as it goes to ~14.7.