Those with a Digital 6 or boxes that allow you to retard your timing. Do you actually use this function or do you just do it with a seperate tune. I have Tuner cat as well and have a seperate tune for the bottle versus my n/a tune.

 

In your case of having the tuning software, you can probably do your tunes on the fly so it isn't a big deal. For someone like me, the box makes more sense as it allows me to keep a nice street tune where I have the timing advanced a bit, but when I spray, the box will automatically retard the timing only during the time in which the nitrous is activated.

 

I am using the retard feature on my Dig-6....works flawlessly and you are always ready to spray