4th gear pull with no tune. You can see when open loop comes into effect at 3000rpm. And watch how the stock ECU runs the mix so rich. In open loop you can see the leanest is about 10.3:1 and the richest is 9.6:1! With a tune it will be much faster!
Nissan, Sentra, SE-R, specv, Spec, Procharged, Procharger, C-1, AFR, air/fuel, tuning