i am going to get either a programmer or get my truck dyno tuned. which one would be better? and i need to get the rear o2 sensors deleted too does the x3 have the option to do that and could someone doing a dyno tune take them off for me? if i do get the x3 i wanna get custom tunes from troyer performance. i just need to know if it would be better to get it dynod cuz there is a very reputable shop in town that does dynos here i was thinking that might be a better idea.

 

I would purchase the Xc3 from the dyno shop with their custom tuning.
Yes, the rear O2s can be turned off in the tune.