12:05 Garage- ’70 Duster build
I think I may have forgotten to mention I changed fuel injectors recently. When I started to have wideband problems, I was questioning if I had an injector problem causing the lean spikes. The injectors in the hemi were the same ones I had in the LA, which were SRT4 injectors. I took them out and backwashed them with carb cleaner and nothing changed. (this was before I discovered the second failed O2 sensor) The SRT4 injectors don't have the extended tip like the early 5.7, but I rolled with them anyway.
I hated the thought of sending off those injectors for cleaning when they really aren't anything special. I think cleaning is around $20/ea. plus whatever shipping costs. I ended up finding some low mileage 6.4L take outs, which have the extended tip for less than what it would have cost to have those cleaned. Maybe it is placebo, but I feel like it idles much smoother. Could it be the extended tip? Could it be 20 years newer injector technology? Who knows. I'm just happy the engine is happy. The flow rate was around 2lbs/hr different so I did have to do some minor VE table adjustments.