CEL P0171, P1170, & P219A
 

According to these codes, the possible causes are intake leaks, bad sensor, bad injectors, and air/fuel imbalance. I had my car tuned last year in april with the following mods: cat-back exhaust, front pipe *catless*, uel header, overpipe. It ran great and last month i installed a inlet hose to replace the soundtube from perrin, a new drop in filter from grimmspeed and no CEL's until last week I decided to do some donuts, following day all these codes came about. I did replace a broken gasket on the header manifold that was broken but that didn't fix the issue, nor did cleaning the MAF did nothing either. So now I'm stumped, any ideas fellas? I have a 2019 gt86 trd

I would double/triple check that there are no leaks in your intake and exhaust again first. I can't think that the sound tube and filter would tweak your A/F enough to pop these codes up. If you're on EcuTek, I'd do a log and check with the tuner again.

Yeah, my tuner said if there is any new air mods to the car, it will affect fueling. I am going to see him today to figure out whats up, because the car is in slip mode as well.

post a log if you want some help though