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RE: DAmmit : Part II



It's hard for me to believe that there is that much of a difference between the computer and the speedo needle. I'm thinking that the computer is lower due to the fact that it is programmed to take the average mph of your drive time. I know that you're thinking..."Well if I'm going a constant 70, then the computer average should be 70 too...." Maybe, maybe not. If you closely watch your speedo during cruise control, it does NOT stay at a constant speed. It will drop off 3-5mph every now and then before the engine kicks in to maintain the proper setting. Also, if u think about it......having 66 displayed on your computer while your speedo is reading 70 is a huge difference at that speed. That means when you're doing 35mph, you're actually doing 33mph. That's too big a margin of error for me to believe with all the technology we have packed in our cars these days. I don't know enough about the on-board diagnostics of our cars to give any technical info to support my idea, but it just sounds too funky to me.
FlyinVR6
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-----Original Message-----
From: owner-jettaglx@igtc.com [mailto:owner-jettaglx@igtc.com]On Behalf Of Sean E. Mulch
Sent: Friday, September 04, 1998 7:51 AM
To: jettaglx@igtc.com
Subject: Re: DAmmit

 

John Hopkins wrote:

125 in 4th gear but, I ran out of room
In keeping with what some others have already posted.
I set my cruise at an indicated 70 mph last night. I then reset my computer and watched the average MPH for a few miles. It read 66 mph.
Now what is this telling us?
That our analog speedos are incorrect! They read on the high side!If this is a percentage error, the inaccuracy will increase with speed. So all you 140+ top speeders are probably being duped by you incorrect speedos. All published documentation I've seen indicates that our top speed is around 128mph.

Just so nobody screams at me about worn out tires causeing the problem. I've only 6600 miles on my baby!

Sean Mulch
98 GLX Red/Blk
Stock.