ECM Tolerances? EEPROM PCM in LT1

[Kurek, Larry]

	Peter wrote:

	>Hi Larry
	>
	>Not sure. Please take this with a grain of salt
	>
	>1.      An 8051 PCM can have different cals.

	I know this...but we both have 94 LT1's with identical engines,
and manual transmissions. The only difference is the PCM I borrowed is
from a Pontiac and mine is a Chevrolet. Same part numbers though...

	>2.      O2 sensors do not have identical chars. Only at 14.7

	I know this, however the O2 sensors were THE SAME ONES. Just to
clarify this, the tests I talked about before were on the same car, same
engine, and used the same sensors. The ONLY variable is the PCM
itself...since I beleive the calibration is the same as well.

	>3.      You may have injector variance from bank to bank.

	Again, same motor...same injectors. There is a slight variance,
but that is taken care of with the left and right pulse widths.

	>4.      Exhuast temps may be different from bank to bank

	True, *if* the micture is different. The Left and right O2's
were actually fairly similiar at WOT, yet the pulse widths were
different by a few .1 milliseconds.

	>
	>later:peter

	<SNIP>

	Thanks!

	Larry