Also, what was the ECU chipped with? What you could do is take your ECU, cut the jumper pin, and if it stopped, you know it's the tune or base-map on the chip.
Were you actually tuned via dyno or a street tune? Or did you just buy a "chipped" ECU and throw it in your car? I remember when mine was just chipped and I smoothed out the fuel curves I used to pop from the exhaust at idle because I was a little bit lean.