# Wideband O2... **URL:** https://forums.speedlife.net/t/wideband-o2/104735 **Category:** SON240sx Automotive **Created:** [March 21, 2007, 9:46am UTC](https://forums.speedlife.net/t/wideband-o2/104735 "2007-03-21T09:46:58Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan) #### Post date: [March 21, 2007, 12:35pm UTC](https://forums.speedlife.net/t/wideband-o2/104735/4 "2007-03-21T12:35:00Z")
> [@David Blaine - Drowned Alive...](https://forums.speedlife.net/t/david-blaine-drowned-alive/11774/17): > > so wouldn’t it be similar to sticking a wideband O2 in the muffler on a dyno? you’re telling me that when you leave the dyno, your tuning gets facked? No what he means is when the weather changes… For example… above/below sea level. If you tune your car for above sea level but then for some reason ship it across the country where you are now below sea level, the AFR will change slightly. --- _[View the full topic](https://forums.speedlife.net/t/wideband-o2/104735)._