I find if i go leaner than 15.3/.4 on cruise the car hesitates, so i try to stay around 14.7-15 on cruise...
Im currently low mid-low 13s at 5-7psi and high 12s at 12psi - too lean?
What i did find was turning the boost up to 14psi and making it 11s afr it felt slower than with 12psi at high 12s afr...