Haven't tried it any other settings, I'm always on my preferred individual setting, which includes everything on sport except for DCC, but will have a play tomorrow.
You might want to send your box back under the 14 day returns policy to get the dual channel unit. They have reduced the price of the dual channel unit temporarily to the same as the single channel variety (£289.99), which also feeds in to the turbo manifold.
I was in an online chat with them and they were claiming 5% gains on the single channel unit, although the details brought up for it were 202Bhp/192PS (obviously a mistake as 202BHP is about 206PS), and the torque figures were about 445Nm. I brought this to the rep’s attention and they said it was a mistake on the web page and corrected the figs on the web page to those of the single channel unit.
I’m 99% sure I’m going to bite the bullet and order a dual channel system today, as much for the economy gains as the power output (this thing would pay for itself in about 2 years if it ups my fuel economy by 10% (as my dad’s unit did for his MK5 Golf).