the smarty is more of a growing tool as you add more and more go parts. its got one of the best fuel economy setting. you can dial in things like TQ mang, timing, duration. and it has 9 software settings to choose from. the snappy thing about it is it will really wake up the bottom end with moving your Tq curve I think 200rpms earlier. you could keep the van aiken if you want does it have a fuel only setting or is it fuel,boost fooling and timing. you dont want to a have timing on a different box and use smarty's timing too. you could use your van aiken and smarty just run smarty on the even # software which is fuel only.
do you have a smarty dealer around you. or a member here that would have one to try out?