I think it depends on the way you drive. THe ECU learns the habits to get
the best fuel mileage, so if you leadfoot one day it will learn that command
and it will feel good the next day, then when you baby it for a few days, it
won't go much. I have had this problem since I bought mine in 1992 without
any mods to it. It used to be like that alot. In the summer back in 1993 I
thought it felt sluggish, so I put new plugs in and it didn't work, I checked
the cap and rotor and nothing wrong their. My uncle said that Nissan ECU's
learn things about the way the motor is being run.
Chris 92 classic.
