Your going to want to keep the power down at around 400hp. Anything more than that for daily driving is just asking for somthing bad to happen. It's ok to turn them up occasionally. But for everyday use it is a handful. You will be constantly worrying about pulling out in front of somebody and the tire breaking loose. You have to feather the gas like your trying not to spill a glass of water.. And the biggest problem is passing people. You have to get in the other lane and then apply the gas. If you don't and you just get in the gas when your moving to the passing Lane it will almost always break the rear loose and twitch sideways. And even when you carefully get into the passing lane you still have to be careful of it breaking loose.
And another issue that comes up is the traction control... if it's turning back the timing or fuel when it detects wheel spin then your not gaining ground. So when you pass someone and the traction control detects spin you end up trying to feather the gas to get around them..
I know it sounds like I am complaining about having to much power. That's because when it's turned up to 16 or 17 psi I do have to much for street use..
Basically you want to run it at 350 to 400hp daily. If you are wanting to see what she can do then you would want to open the tap and let it go..