hey ther Terry ,are the upgrade chips worth it? you sound as if youve changed them before ?I have a couple of the p2k older w/qsi but I think there gp7s ,they dont match up well with my newer F-7s in comparison ,so Im currious…Jerry
I have re-chipped 2 BLI USRA Heavy Mikes that did not have BEMF - the whistle in the new chip has much better options. And the motor control is better even if you do not use BEMF a lot.
ANd once you have the upgrade chip you can use the Quantum Programmer to upload any of the sound files they have in case you want to change something, or use the decoder in a different loco.