Not close at all.

The E-01 is a boost controller that has some extra features thrown it. It gives you the ability to data log runs and tune thier E-Manage system (fuel control).

The ECUtek is a reflash of the factory computer. It allows the tuner to change the boost, timing, fuel, etc all with data logging capabilities when paired with the Delta Dash. One thing you might not like about the ECUtek is that you'd have to bring it to Mastro to get tuned as opposed to being able to do it yourself.