Currently the Heng long tank recoils and has a feeble sounding gun when you press the fire control on the transmitter. If your electronics could some how tie into the Henglong trigger circuit and intercept the signal to play a gun sound on your sound blaster module, this would be a nice feature. Or maybe your system will have its own gun control sound loop?

I agree on the smoke. I have pulled them out and use them on my model railroad. If a real tank smoked like that, the block would be cracked and you would be getting antifreeze in the combustion chamber. Just a waste of battery power as far as I am concerned, but I admit it looked cool for awhile.