If adding headers and open exhaust on a stock 22RE was causing a serious lean fire condition, wouldn't we know about before now?

Were the injectors tested or refurbed? Like me, I assume you don't know or have not tested the fuel pressure?

I have to agree, if there were a serious lean fire condition we would likely know about it. Question is, do my NOx levels indicate a serious condition. I do not believe so simply because I have no miss nor pinging, and it drives so damn well.

Injectors were sent to witchhunter, which was a waste of money. Everything tested well to begin with.