Yes, I'm still using the narrowbands and if the Inj Tip Temp has been throwing off my tunes after reflash then I just have it in the ballpark right now. I have an LM-1 and I just ordered the pro features set for HP Tuners so I'm waiting on my cable.
I assume there is some firmware update on the device to include pro features but I don't see a link to it for my device. Anyway, when that comes in I'll wire the LM-1 analago out into the MPVI2 and start using wideband.