Re: Rev Limiter on '87 Corvette

[Roger Heflin <rah@horizon.hit.net>]

On Tue, 6 Jun 2000, Jeremy Gonyou wrote:

> I was kinda thinking the same thing about my car.  (the revving part not the 
> new motor part).  I was going to modify the speed limiter section to include 
> a rev limiter by throwing in a extra branch statement.
> 
> Well, Pontiac says a rev limiter kicks in at 6200 rpm...I haven't found it 
> yet, and when I tried, I found my tach needle on the wrong side of the 
> little peg.
> 

I don't know about the 87 specifically.  On my 93 LT1 f-body the rev
limiter is using something called "reference time" which roughly seems
to translate to 1/4 of the time for a revolution.   This value is what
the data value in the chip was compared against.  The reference time
was also included in my cars standard data stream.   This is also the
value that RPM is figured from.   I suspect that there is something
similar on the 87 also, so look at where rpm comes from and then see
what is using that.

			Roger

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