Replaced ECM now a little hard shift and a little bit faster idle

Hello, why did you replace your engine processor? It is extraordinarily rare that the engine processor would need to be replaced. Sometimes if it has water damage, for example, that would be a possible cause. Your engine processor does not generally influence transmission operation on a 1995 vehicle. Yes, load and engine performance has some influence on how it feels, but you're asking for something that you don't have any software or any computers or any way to diagnose or repair your concerns with. And, how was the processor replaced and how was it programmed? I'd recommend seeking guidance at a shop near you.