This is a good source of fuel trim info in pdf format. Other good info on the site also.
CounterPoint Archive 2001 - 2003 - Wells Vehicle Electronics
Volume 6 - 2002 Issue 4
Quote from above:
"Short term adjusts the air-fuel ratio in response to brief changes that normally occur during engine operation."
Long term is what you need to be looking at in terms of excess fuel usage and or a problem.
Looking forward to the responses in this thread.
