I recently purchased a pair of Bachmann GP9 locos from a reputable  dealer.  The locos run very slow, even at full throttle.  I am not a DCC knowledgeabel guy, but I had someone who is see if there was a speed limitation programmed into the chip.  We could not determine what codes are used for what function.  No such documentation was with the loco, like I have with other brands of N scale DCC locos.

Does anyone else have any issues with this loco?  Anyone know where to find the documentation on the chip in these locos a so we can see if we can enhance performance by changing a setting or two?

Dave