Originally posted by euroshark
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E30 top speed limiter
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Well... I'm not saying I'm right, I'm just going with what I think is right. If someone can do this with math, please help because I'm not about to crack open a book to help me remember this stuff! lol
The speedo sensor is triggered by the diff I think. The E28s do it that way at least, so if your tires are larger or smaller in diameter than the factory size, you will see variations that change exponentially. Mechanical or electronic doesnt matter because they are triggered by a rotating mass that is directly connected to the wheel and tire. If the wheel rotates slower for a given speed because the tires are larger than stock, then the speedo will be affected more and more as speed increases (it will show slower than your actual speed), and with smaller tires it will show faster. At least that's my understanding... I'm no math major, but my gf is :drink:'88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5
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Are you talking about your E32? I have heard of them hitting over 175mph with the speed limiter removed.
{hard on}
I actually went so fast in my 88 that the windshield trim flew off and the window cracked. I bottomed out the speedo (170) and the tach was still flying higher.
The 94 is definately faster, but I haven't beat up on it too much because it's much nicer.
It's eerie how stable the car feels at such high speeds.
Oh yeah, I only paid $2500 for the '88 750... :)
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Oh hell yeah!!!
I have wanted a 750il for a looooong time.... I think I'm gonna have to spoil myself this summer :)
So... you have a '94 750 as well?? Have you put up pictures of that one yet? I think I've only seen the '88... the green one?'88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5
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Nope.
The green one is the 94. That's the last year that they made the e32.
You can tell it's a late model by the fact that the lower lip is flared, and by the fact that it LACKS ellipsoid projectors...and that it has a radio remote, and not an IR one, AND by the fact that the rear shades are powered...all in all, a much nicer car. I could've bought an e38 740...95 or 96...for less money.
The 88 alas...
Last edited by Nick; 02-26-2007, 04:23 PM.
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Originally posted by euroshark View PostThe speedo sensor is triggered by the diff I think.
Originally posted by euroshark View PostMechanical or electronic doesnt matter because they are triggered by a rotating mass
Detail: both the ABS and engine crank position sensors use coils and a cogged wheel. This only produces a usable signal when the rotation is fast enough. By using a magnetically closed switch the speedometer/odometer can measure even very slow movement.
BTW, the term "exponential" is incorrect. The difference between indicated and actual speed is "linear" or "proportional" with a fixed offset.
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Originally posted by 02stu View PostAny one know the how high the gears in a 318is w/ the 4.10 will take you? I know its around 125 at the top of fourth.
With a 7100rpm MarkD chip, these numbers are 123mph and 154mph, respectively.
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BTW, the term "exponential" is incorrect. The difference between indicated and actual speed is "linear" or "proportional" with a fixed offset.'88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5
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