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Understanding the Smog Index on new vehicles
Example: How can a 270 HP, V6 Nissan Altima have far less smog index values than a 177 HP, 4 cylinder Nissan Sentra SER?
V6 Altima = 0.29/1.0
SER = 0.49/1.0
Does this make sense to anyone? And this is only one example. VW's 2.5L V5 engine has something like a 0.09/1.0?