Quote:
Originally Posted by clarkkent
Regarding the gears, theoretically, if you are crusing down the freeway at 70 in 6th gear with 3.43's you're pulling 1700 rpm's or something. You switch to 3.91's and you're pulling 2100 rpm's at the same speed. You are producing more emissions since you are at a higher rpm, so gears do in fact effect emissions. It's one reason why cars these days have such tall overdrives/double overdrives, not for "driver comfort". [those numbers are off the top of my head, but you get the idea]
That being said, not sure if CARB cares about that or not. But just wanted to point out that gears can effect emissions. Do they effect them that much? No, but still I could see the EPA caring about that to some degree
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they way Cali does smog testing does not take that inot effect (but, hey, dont post your theory anywhere else, k? dont want to give them any ideas that would cost us more money... haha