Mongoose Or Viper?

[Trav33]

Well i've found one fundamental design flaw which means i WONT be buying the Viper 791... Something Chris and other may have touched on, but not clearly explained. If i was to buy the viper, i would be buying it as a remote start and turbo timer TOY, not an alarm or immobiliser, not for security.

Immobilisers normally have circuits which are Normally Open (NO). This means the immobilisation circuit is open, and car will not start, until the alarm module disarms, and applies power to the circuit. Cut power to the alarm, and the car will not start, because the immobilier needs to power up the relay to close the immobilised circuit.

The viper is a Normally Closed (NC) system, the circuit is normally closed, and the alarm must apply power to break the circuit. ie, cut the one power wire to the alarm, and the immobiliser will not keep the circuit open, meaning the circuit is not immobilised and the car can be started. Not a good immobiliser!

[Chris Rogers]

which is why I keep saying its all about the install..

I have a mate of mine (EE) that modded a 791 to do teh exact opposite of what you stated. did it simply becuase he could

[Trav33]

Internal mod? You mean he slightly improved Vipers crap design?

[Chris Rogers]

Internal mod? You mean he slightly improved Vipers crap design?

yup.

good post on CAA btw (just saw it.)

[K N P]

chris - is mine NC or NO?

[Chris Rogers]

chris - is mine NC or NO?

NO. I'll explain it when I see you.

[HotPlates]

Hi Chris.

This Mongoose alarm on ebay says it is Aust standard certified. So this should be fine to get installed right? The difference in price is huge!

http://cgi.ebay.com.au/MONGOOSE-M80G-CAR-A...1QQcmdZViewItem

[Chris Rogers]

Hi Chris.

This Mongoose alarm on ebay says it is Aust standard certified. So this should be fine to get installed right? The difference in price is huge!

http://cgi.ebay.com.au/MONGOOSE-M80G-CAR-A...1QQcmdZViewItem

if you want to pay EVERYTIME it breaks - yes. it has NO warranty despite what the seller says. (they are not a dealer and other dealers WILL NOT warrant it.)

[MotoMan]

if you want to pay EVERYTIME it breaks - yes. it has NO warranty despite what the seller says. (they are not a dealer and other dealers WILL NOT warrant it.)

Because alarms break so often too....

And other dealers will warrant it.. You may not.. but don't speak for every installer/dealer around

[Halo a]

Hey Chris i did sum research on the mongoose wedsite n it says got 11 programmable features. what r they ? can we get a module or something make it to auto start ?

Thanks

[Chris Rogers]

Hey Chris i did sum research on the mongoose wedsite n it says got 11 programmable features. what r they ? can we get a module or something make it to auto start ?

Thanks

it does haev them. no module for RS though.

[Beer Baron]

yeah I've got a Viper 791. I've found it to be great. I had my installer put in an extra two immobiliser points, plus a remote kill switch...

I dont know how helpful this will be for insurance purposes, although its bound to slow the pros down for at least another 30 seconds!

The remote start feature is the best thing about it for me.. The amount of damage I'm saving on the engine is not calculable, but surely good in the long run. That marketing campaign a few years back for an oil company said that a majority of engine damage is done when the engine is cold. Anyway thats just a perk.

If I had my choice again, I'd have a very difficult decision - although I'd probably end up with the M80 for security purposes. People cant say that their Viper alarm is great because their car hasnt been stolen! It's not until you lose your car that you will change your mind! haha

The remote start and auto window winding is awesome, although window winding can be implemented into most alarms i think?

Conclusion:

Buy the Viper for - Remote start, Flashy remote, 2 Way paging (only if its parked in your garage or within a few hundred metres- sif you aint gonna hear the exhaust anyway!!), engine saving ability if you religiously use the remote start to warm your engine

Buy the M80 for - Security - Black Wiring = harder to steal, Insurance approved (check the viper with your insurance company tho), possibly cheaper, easier to find replacement parts

using remote start to warm your engine is the worst possible thing you could do to your motor, and is causing more engine wear. yes most engine wear is caused when the engine is cold, starting your car when old, then letting it idle for an extended period and SLOWLY warm up just prolongs the amount of time the engine is operating at less than optimum temp. you should be hopping in the car, starting it, let it set for 10 seconds to ensure the oil temp is up, then drive out and heat the engine by driving it.

as for the viper being good, listen to what the car security pro's keep saying over and over. they have wanky features, but zero substance. I'd much rather have my car unstolen then have a massive fancy remote and useless features.

[ras1983]

the previous owner installed a viper alarm. but i have no idea what it is. can anybody tell me how the hell i can find out? i've checked the engine bay and i can't seem to find where the module is.

if somebody could pm me with the possible location of the module(for security purposes obviously) that would great.

EDIT: fortunateley the owner before that(the first owner) fitted a 3-point vdo immobiliser which i am thinking of reconnecting in place of the viper. i just did a few tests. i prefer the vdo.

[Halo a]

it does haev them. no module for RS though.

so do mean can be done to auto start ?

Thanks

Mick

[Chris Rogers]

so do mean can be done to auto start ?

Thanks

Mick

no it cannot. look at at autowatch 288rli if you want that. BUT you lose the black wiring.

[Halo a]

o, if so i will just stick with m80. is the m80 can b done like autowatch that windows close up and sunroof ?

Thanks

[Chris Rogers]

yep.

[Halo a]

Thanks Chris

[K N P]

the previous owner installed a viper alarm. but i have no idea what it is. can anybody tell me how the hell i can find out? i've checked the engine bay and i can't seem to find where the module is.

if somebody could pm me with the possible location of the module(for security purposes obviously) that would great

most likely under drivers side dash

[Chris Rogers]

as 90% of them are done..

kev, BW should be back in the morn I hope..