I believe the only real benefit to relocating the ambient air temp sensor would be to get autostop when it is below 40ºF.I see a few of you have the warm air intake mod and have relocated the outside temp sender.
How does this help? I thought cooler denser air was more efficient? Also, does the engine now think it's warmer outside and change the ratio of fuel/air with sender relocated?
Cooler, denser air is "better" in the sense that it contains more oxygen, so more fuel can be injected, and you get more power.
If it weren't for lean burn, this would be good with the Insight, too. However, it has been learned that warmer air promotes the car to enter lean burn mode. That's the real purpose of the warm air intake mod.