Originally Posted by cruzinquick
That's a great question. My concern is even more detailed, would a "winter tune" cooler temps dyno session change A/F when summer rolled around? Possibly even entering danger zones? Or would the ecu recognize the extreme conditions and compensate?
Only for this reason was I thinking of the inmotion tune with 3 different chips stock, summer, and winter. I may be the only one who races in 100+ degree weather in the summer.
Thanks for a great discussion.
The ECU has sufficient dynamic range to adjust for atmospherics. Octane requirement decreases in the winter.
LET is beta-testing our TwinTune setup right now. We have a switch to toggle between two setups, be it nitrous, race fuel, or valet.
As others have pointed out, LET develops our tunes in-house, on the dyno. As far as we know, LET is the only shop able to do true custom tuning, not involving an overseas file service.