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So you do know about the tweaks. As I said, it's just going to make it tougher to find little things that help.
And you realize something like 80 or 90% of the emissions are due to cold start and warm up on the EPA cycles, right? The next big chunk is transient and intrusive diagnostics. Steady state emissions, driving down the road, are effectively zero. The cats are converting everything to water and CO2.
You will cut CO2 though, if you are considering that.
Are those numbers for the '13 model? Did it change? Stuff I found was old, but only mentioned the first couple years.
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