As some may know, I've been upgrading my older TMCC N&W J class to bring it up to more Legacy-like standards. I originally installed one of Gunrunner John's chuff generators for 4 chuffs/revolution as well as a superchuffer for improved lighting and smoke functions. Eventually I had a desire to improve the slow speed performance, as Odyssey let it run slow, but not quite slow enough. An ERR cruise commander M solved that issue, but not without problems for me. I quickly got in over my head, blew up the radio board and had to send it out to Gunrunner John to work his magic. A typical ERR installation is quite simple, but Lionel used a slightly different connector configuration in this locomotive which made things difficult. Anyway, it works great now and I'm very happy with the performance of everything.