the ones ive read about use the exisiting one.
Just works together with the alarm.
SO im guessing pressing the remote turns off the alarm, sensors and imb. However if you turn on the car without entering in the keypad after i think 5 seconds the car will stall out.
But im sure theres many ways of doing it. For example making the keypad responsible for turning of the imb. So u dont enter in the code the car wont start.
Im pretty sure i saw a link to buying these things... ill try and find it. If i can ill edit this post and put the link.
EDIT: Yep im cool! i found it. Cost 125!. This one looks like it comes with its own imb. circuit. and they are quoting 60 dollars to install... too bad there over east... Group buy anyone?
http://www.nissansilvia.com/forums/index.p...owtopic=361351#
A quick explanation....
This system will work with any vehicle, any alarm, even vehicles with turbo timers!!!
Basically the system will automatically arm 1 min after the ignition is switched off.
You can also have it set up for Anti-Hyjack mode where if you open the drivers door (even if the cars running) if you do not enter the pin number within 5 mins it will kick the immobiliser in and shut down the car. So if someone pulls you out of the car and drives off, they will only get as far as 5 mins down the road and then they will not be able to start the car again unless they have your pin number B) which is pretty dam cool.