[straight 6 roar]

That's on the extreme end of the spectrum. Surprised that a stock cp3 would hit 700hp. Around the 100-150% range you will start getting into some haze accelerating with traffic that might not be very apparent in the daytime but you'll see it at night when someone's headlights are behind you. The trade off is that when you start increasing pulse width the rail pressure drops and you'll start seeing more smoke, more heat, and lower power. It is harder on the pump as well when it's at max volume and pressure can't keep up. You won't wash down a cylinder unless the tuning is terrible.