[robwbright]

Originally Posted by fenton

Without the esc armed drag reduction will not work and you will be about 10 to 12 HP less at the top end. This is completely normal because the SC isn't Turning and only free wheeling and is a restriction.

You always want to have the system armed and use drag reduction. When you have the Dr hose connected anytime a reduction of performance is detected (vacuum between SC and throttle body) the SC will pulse to equalize the pressure.

Drag reduction typically pulses .5 to 1 psi.

As far as the mpg increase if you drove around never engaging the system yes you will get better mileage. Less air less fuel.

The way I use drag reduction is go to 75 percent throttle or so. This way there is a restriction in the system and Dr pulses creating a increase in performance over stock.

Moral of the story never drive without the system armed for maximum pleasure.

Thanks!