Finally it happened to me :-)

Well, I don't have a Longchamp, but I am a member of that club. I HATE driving the Pantera through the parking garages here in Vegas.

Mine set em' off once at the church on Sunday morning. I went back a couple of times after but it never happened again. Maybe my new 408 will have the congrecation on their knees again!

At a Canadian Pantera event, while folks were relaxing and enjoying lunch, I was moving my car and set off a (non-Pantera) car alarm - when I came back to the lunch I received a round of applause.
I've also heard a rumour that I've set off the alarm systems in the vettes of one fellow that lives near me (his cars are stored on lifts in his garage, I guess the sound gets in and bounces around).
There have been a number of other occasions, but unless I'm driving slowly with the windows open, I don't typically notice when I've set off an alarm.

Years ago I lived in a neighborhood of small houses close in tight. New families like me starting out. Down the road was an obnoxious kid with a $500 car, a $300 stereo he thought was made for entertaining the neighborhood and a $500 car alarm.

I had a friend staying with us for couple months who had a ricer bike. Every morning when he would go to work and drive past the kids $500 car he would rev the bike and set off the alarm. I can tell you how many times I lay in bed and heard that; just start laughing.

I set off alarms every time I roll down the street. I used to park the car in the bottom floor of a 8 floor underground garage. You have no idea the racket caused by 8 floors of alarms going off while I entered or exited this parking garage.

What is it about our cars that does this - the specific vibrations of a 351 at lo rpm?

If you don't have enough cubic inches to do it in a car, Harleys work fairly well at this in parking garages too! Not so much outdoors....

Steve

quote:

Originally posted by David B:

... What is it about our cars that does this ...

No x-pipe or h-pipe crossover between the two banks of exhaust, makes for a lower frequency tone.

-G

George is correct on this one, I set off more alarms with my 5.0L Fox mustang with a 2.5" x-pipe w/flowmaster mufflers. A friend had turndowns which really provides a lot of acoustic reverberation. I'd set off alarms once in awhile in the Pantera with the ANSAS, but the mustang set off alarms almost everywhere I went.

quote:

Originally posted by Cowboy from Hell:

No x-pipe or h-pipe crossover between the two banks of exhaust, makes for a lower frequency tone.

-G

So, I would have a higher pitch if there was a crossover? Seems like the only easy way to do that is with 180 degree exhaust?

I see no reason to do it, it just got me thinking...that happens when I learn something new.

It don't have nothing to do with noise. I set them off just by sitting on peoples car. It si almost like they don't want me to take a rest on thier hood or something. I don't know what is wrong with folks these days. Can't find a good place to sit my ass down anymore.

quote:

Originally posted by RobertVegas:

quote:

Originally posted by Cowboy from Hell:

No x-pipe or h-pipe crossover between the two banks of exhaust, makes for a lower frequency tone.

-G

So, I would have a higher pitch if there was a crossover? Seems like the only easy way to do that is with 180 degree exhaust?

I see no reason to do it, it just got me thinking...that happens when I learn something new.

I have alway set off alarms system with my Pantera... stock or 180

quote:

Originally posted by DEVIL:
I have alway set off alarms system with my Pantera... stock or 180

My car constantly sets of alarms too. Constantly.

In an unrelated thought, will the pitch of our cars increase with a crossover?

If there is no crossover downstream of the collectors, its dual exhaust without a crossover, standard exhaust or 180 exhaust doesn't change that situation. 180 exhaust minimizes the irregular firing order of the standard exhaust (the burble).

Yes Robert, with a crossover there's twice as many pulses coming out of each muffler for every revolution of the motor, so the frequency doubles.

-G

Setting off multiple car alarms every time I drive mine doesant even phase me anymore.. LOL

I used to live in CT with the Pantera and there is this famous place all the cool cars go for the last 50 years it is called the Berlin Turnpike (rt 15)... you can see, 32 fords, shelbys, blown race cars, Lambos ect... the cruise is from the McD's to the BK about 5 miles away. You have to go by the Dairy Queen which is always packed. I would idle thru the parking lot set off the tuners alarms and while they were getting out if line and going to their cars to hit the remote key My girl and I would move to the front of the line to get ice cream.
I will say my 1999 blown vert stang does not set the alarms off.
The 2003 HD softail with straight pipes does at idle, and as of last Sat my new bike has done it once, in the condo lot, with factory pipes... 2006 Screamin Eagle Vrod

Did it again. And again it was a Volvo that "got alarmed". Maybe Swedes are more sensitive