Your engine is a PS-1 engine. So just get the PS-3 steam upgrade kit. Upgrade the engine. Then get your large steam sound set and put it in your Water Tender. You can run 4 wire tether to control the Water Tender Light and PS-2 type coupler. Turn volume down for engine sounds on your engine and let the chuff run on the water tender.
Of course EER uses a magnetic chuff. So you do not have chuff rate control. But again you can get a chuff generator from John, but in the end you would be close to $500 in parts alone to get what you want. Sell it and buy a Legacy engine if you do not like the MTH sounds. Unfortunately, I would say the quality of that MTH Premier engine is better, but you prioritize what is important to you. G
