Thanks for the quick response and all the input!

What year is the C4 - 92
How many miles on the power and drivetrains - Just under 70k the 3.54 ring and pinon has only about 5k on it
What changes have been made as to age as to fuel injectors, MAF, MAP, O2 sensors, etc - These are all stock, original parts except the O2s which were replaced at the same time and have about 5k miles on them
Have you checked the fuel rail pressure, is it working correctly to about 43 PSI at low end and a bit higher at WOT - not sure about the pressure yet, I'm pulling it out of storage at the moment and I'll need to get a new battery and go through things for a fresh start
What elevation and type of fuel used - we're between 5k - 6k throughout town, 91 octane is what we get for premium
Not sure the convertor has to be changed or if the tune you have is set for that stall rate - [/b][b] it was on the spec sheet for this chip, but I have never scanned it myself to confirm, and it is the removable EEPROM
Does engine have a MAF or not then it is speed density tuned and maybe wrong for elevation, weather, fuel type - Yes, the stock MAF

I may have access to an OBD1 scanner, so I will confirm and see about getting a scan done.

The T-stat is a 180 deg