So i was driving around the other day and the car felt sluggish. My service engine soon light went on. Took it to nissan and they changed the A/F sensor. Guy that works there thinks that the UPREV tune may have something to do with it.
Now 2 weeks later my SERVICE ENGINE SOON light is back on!!
Anyone else with similar issues?
I also have a Stillen CAI, Berk HFC, Ark Exhaust installed.
This the pic of invoice from Nissan