I have a procharged 5.3L 2015 Silverado. Was told by the local dyno shop that the truck came stock w a wideband so they don't use a tailpipe sniffer when tuning. It's all done off of the logged data in HPTuners.

Does this sound right? I'm looking to buy my own HPTuners cable to make some tweaks myself but they have the basic and pro models with the lro having a wideband O2 hookup. I used to have an HPTuners cable on an old trans am and we had wired a wideband in through an empty sensor plug to use it when logging but I'm not sure if I'll have to do this for the Silverado

 

No.

They use narrow band sensors still.

No factory truck as of yet comes with stock wideband sensors.

 

They are incorrect, these trucks does not come with a wideband sensor. I am a dealer for HPTuner if you are interested I can get you an interface below the retail price. Shoot me an email at atomicfandp@gmail.com or send me a PM if you are interested.