What are some diff security systems & what do they do
 

what is the viper? what are some realy high tech ones?

DEI Vipers are very nice alarms, and will protect your car well. You can also add on features like remote door opening, car starting, and some can even roll down your windows. I think anything by DEI is a good alarm, and I've had good luck with them in the past.

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1991 LX Hatch 5.0L