Hi Kenny,

I received your email, thanks.

My mistake, the image I posted was from a 2000 LS1, but I had upgraded the PCM to a 2002 operating system. So the limit you see in the image is from a later OS.

The "physical" PCM limit for the 2000 LS1 is 0 to 131,070 however, we have found that setting the speedo values to their absolute min (0) or max (131,070) values can cause the speedo calculations in the PCM to get a "divide by zero" error. To prevent that, we artificially limit the speedo settings in EFILive to 100..90% of maximum.

In the 2000 LS1 operating system 90% of 131,070 is 117,963. Unfortunately, it looks like that is not high enough to allow certain combinations of tires/diffs. In the next release, I will set the limits to 100..98% which will give the 2000 LS1 a range of: 100..128,448

Unfortunately there is no simple workaround for this problem right now.
The only option would be to upgrade the PCM's operating system to 2001/2002. But that is not trivial and the calibrations cannot be easily copied to the new OS.

An updated version of the software will be available in a day or two.
Please subscribe to this thread to receive notification when it is available.
http://forum.efilive.com/showthread.php?t=4442

Regards
Paul Blackmore
EFILive Limited