Cobb Tune ABR vs SBR
 

I would give Sam by Design a call

FYI, the aggressive (ABR) tune on my car felt like it was sometimes going into neutral between gears, Sam assisted me to install the SBR and it's been perfect since . I think we just went straight from ABR to SBR, but I would verify with Sam. He is very helpful.

I also installed the Sport Tune vs Aggressive. I have some short commutes and felt the car would be more civilized with the Sport tune but still have plenty of oomph when needed.
Install the PDK Update and run the PDK Relearn Update is great for any driving and the Relearn which you will find in "troubleshooting" really smooths our the updated PDK. Whenever you install or uninstall the PDK Update run the Relearn.

Update. The SBR is fine and though I've not tried the ABR, I like how the SBR curve allows for easy commute driving and control over the throttle, yet there is no difference in overall power compared to ABR. The difference is simply the throttle response curve. There is still more throttle response and power than stock, even with ACN 91 tune, and you can definitely feel how the HP and torque curve over stock is much fatter from idle to about 4k RPM. The engine just seems not to have to work so hard at that range, which also shows up as less exhaust resonance in 7th gear at relatively low freeway speeds (60-65 mph; I have a Sharkwerks exhaust). If you're thinking there is no benefit to getting a Cobb tune because the car is already very powerful and you don't track your car, I suggest you re-think that. It makes for a better driving experience even when driven on the street.

Just goes to show...Something for everyone :)

Which one do i have Sam?

On our Stage 4 stuff it's about in between. Different with the upgraded turbo.

I am running stage 2 91 map with ABR and love it. I have noticed that sometimes when the car is cold and I accelerate in auto mode the engine cuts out a bit. In manual mode I don't notice this. I don't recall it ever doing it with stock ECU.