SpeedDemon, I did some research on the Zex kit. Looks like their kit provides a full throttle switch. However, you will need to add the window map switch. I found this on their site:
http://www.compperformancegroupstore...OUSACCESSORIES
Traction Control Window Switch
PART #82085
Let's you select what rpm the nitrous activates and deactivates
Allows you to select what gear the nitrous starts spraying in
Fully programmable and adjustable up to 20,000 rpm
Easy installation with complete instructions