I think it was about $600 or so

The good thing about the tt is that when you run it in auto tune mode is that it doesnt retard the timing or afr like auto tune basic and pro

It uses your exact map to gather the data

I dont use target tune much because it seems to have an issue when i back off and then apply light throttle it splutters a bit for sec or two.

This doesnt happen with closed loop turned off.

I think it has something to do with the exhaust because while on decel the rear cylinder leans out and the tt corrects it but when i touch the throttle again its too rich for a few seconds until it corrects again.

Its not bad. Its just not quite as smooth as with it turned off. And im fussy.