Had warranty service done at local dealer... Complained of hard/delayed up shift 2/3 gears - they did software upgrade and it has changed idle and average gas mileage - 5 mpg. Anyone else experience this?
Cheers
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- 08 Jan 2012, 21:23
- Forum: Performance, Tuning & Aftermarket
- Topic: 2008 s80 trans software upgrade
- Replies: 0
- Views: 543