I just had my P72 chipped at Phearable for a mostly stock B18C1. I'm looking at widebands now to monitor my A/F ratio, but was just curios as to what everybody else is using. Like I said, it's mostly stock. SRI with a v-stack, S2 Pro Series intake mani, Mugen 4-1 header with 2.5" exhaust and a twin loop muffler. Thanks for any suggestions guys!

 

I am running a PLX M300 Tuner Edition, nearly ten years old and still going strong. O2 sensor went bad last year & had to be replaced. But last time I was on the phone with PLX they didn't plan on restocking them anytime soon.