O2 sensor and tune advice
New 2019 Street Bob, about 3 months old. At 1500 miles had some upgrades done: Vance&Hines big radius, Harley heavy breather, Harley pro street tuner, and stage 2 torque kit. All the work was done by the dealer. They used a map for stage 2, though it's probably not tuned right for the short pipes...
Sounds great when you fire it up, engine idles OK, runs smooth. I can ride for ~20 miles before I get a check engine light (seems to pop up in 2nd-3rd gear, noticed it once while engine braking). While light is on the performance drops and it starts backfiring on decel. Codes come back O2 sensors, front and back. I can reset them, then this repeats -- rides smooth for a while then O2 sensor codes.
So I'm pretty sure it's a bad tune / too lean, but I'd love to hear opinions. My big question is what to do... this is the first bike I've bought new and I'd like to keep it in warranty! Right now they are recommending a dyno (and the tune would sure be nice), but I'm concerned there won't be enough headroom with the Harley tuner to deal with the O2 sensor issue. Plus it would be out of pocket. Should I give it a shot or suck it up and go back to stock pipes on their dime?