Thanks pal, I went ahead and flashed in the 12212156 so, it’s running great! Only issue I’m having is a PO171 and PO174 code. This never showed up prior to the OS swap, could it possibly be a different O2 sensor type/pin out? I swapped this OS into a 99 Silverado 4x4 1500Originally Posted by antus
In case anyone was curious, the lean code was due to the 1999 fuel injectors being only 19.8lb/hr, but the 12212156 OS being cal’d for 25lb/hr. I swapped in my parts trucks good condition injectors, and Voila! No more code! Now I’m about to start dialing in the tune, I’ve read hundreds of articles about tuning over the past 9 months, I think I’m ready to start! Anyone have any tips/tricks for tuning using tunerpro RT?
ALSO, if anyone has an ADX/ADS file for data logging in tunerpro with the 12212156 they can send me, I’d much appreciate it!
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