I can tell you first hand that the Uni-Chip along with this intake, the ATM FMIC, ported TB, ported down pipe and 2.5" cat-back makes for the absolute fastest set-up my car has seen in the last 18 months. And I have had a ton of different products on my car as well as every piggyback other than the U3 (though my father's U3 feels quick on his Abarth with the ATM FMIC and 2.5" cat-back too).
Stage 1 was great, but Stage 2 with this intake is completely bonkers. I can't even keep it on the road with 215 rubber and I'm pretty sure I could burn rubber through 1st, 2nd and at least into 3rd if I wanted to abuse the clutch. Speaking of clutches... I'm going to need one soon now.
I seriously cannot get over the throttle response. It's an often over-used expression, but all you have to do is curl your toes and you are going to be launched, even before the meat of the boost curve. The rev limiter comes so fast in 1st it is almost useless. By the time you get traction you have to be getting out of it and into 2nd and then you still are having a hard time hooking. Did I mention this is with 8.5" wheels and 215 rubber yet? (and not the lightest wheels either...I can't imagine what my old Allergritas would be like with this intake/tune lol!)