Quote:
Originally Posted by ShadowReaper
I have not reset the ECU, I have only flashed a revision from my tuner. What are all those steps doing?
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The steps will clear everything the ECU has "learned" about it's environment and the corresponding tuning values (STFT, LTFT, etc). It will then re-learn based on the new altitude you're driving in now. Your tune should be fine as I believe it's loaded as a ROM into the ECU. Someone with more tuning experience would be able to verify, but my '01 RS that had a tune never lost it after resetting the ECU via this process.
How long have you been in CO?
Quote:
Originally Posted by humfrz
I thought that the ECU would be smart enough to automatically adjust to temperature and altitude differences ....... 
If I'm misinformed, please straighten me out ..... 
humfrz |
It could very well be, but it could also take a while to straighten out the values. It would be dependent on how quickly the car can "learn" based on the higher elevations. This approach is a short cut to waiting for the ECU to re-learn.