http://cgi.ebay.com/ebaymotors...38634

"The Speednosis PRE-spool switching system allows your nitrous system to spray as your Turbo is building boost. Also works great with your Supercharger for huge low end power gains. It will control any existing nitrous system. The PRE-spool system is easy to adjust with an allen key from 4-15 psi, and is completely automated once activated.
The PRE-spool switching system is first full throttle activated, then boost level deactivated. This allows you to spray nitrous until you reach your desired boost setting and nearly eliminate ALL your Turbo lag times. Not only will this type of nitrous use make huge track and road course gains. This system will actually save you a TON of time and money on nitrous refills.

PRE-spool comes with everything you will need to install it. The PRE-spool system supports wet or dry nitrous systems. You can control either a single nitrous solenoid or nitrous and fuel solenoids. Includes a detailed wire diagram, install is simple."

 

why spend $50 on a pressure switch? Couldn't the same thing the acheived by simply having a pressure switch that cuts current to ur nitrous sytem at X psi? however it does look like a good idea for those who are looking for a decrease in lag time with their sc63s etc
-Ryan

 

that trick has been arround awhile. most people just ue a small 50 shot or so hard wired not on a micro switch just a push button to spool large turbos at the lights fo no lag.