Originally Posted by Cee Jay

I know it has been mentioned before, but how about a wet Nitrous Oxide "Cheater" kit?

Originally Posted by Rey

I note an absence of comments on advantages of larger lower crank(sic) pulleys and intercoolers. Check out Eurotoys who offer both. Prices are not cheap. Seems most tuners have installed smaller upper pulleys. You can go only so small with an upper pulley. The drive belt needs a minimum contact area to prevent slipping. More tension on the belt loads up the superchargers bearings. A crank pulley is much more difficult to install. But, "while you are in there" one can also install a larger intercooler.

Originally Posted by Eurotoys

The lower pulley on a 5.0 is fairly easy to install when compared to the upper. The lower pulley just unbolts, most of the work can be done under the car. Jacking up the car and removing the under-tray is the hardest part.


Mike

Originally Posted by Rey

Steve, no testing before/after throttle body boring. My Jaguar is the n/a base model. I was interested in a bit more top end power for high altitude driving, with no driveability/gas mileage loss.
The electronic throttle body control acts much like a constant velocity carburetor, so there is no bogging at low rpm/high throttle opening with a larger bore. You can easily "do the math" to measure overall throttle plate area before and after. Bore area will only tell the absolute maximum potential airflow. Read somewhere (cannot find the quote) that "suck through" throttle body supercharged motors like Jaguar are much more responsive to throttle body bore size than "blow through", like Paxton.