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Old 08-04-2011, 01:00 PM   #12 (permalink)
t vago
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Quote:
Originally Posted by Diesel_Dave View Post
Right on!

It's been debated back and forth as fas as what rate of acceleration is best. Personaly, I've found it hard to notice a difference either way. What really kills your mileage is unecessary acceleration. Hard acceleration is generally thought of as bad becuase, in many cases, people accelerate hard only to have to brake hard at the stop that's right up ahead. It's really the braking that is wasting all the energy.
Besides that, hard acceleration is bad in some OBDII vehicles because those vehicles' engine computers will go into open loop and perform enrichment of the fuel/air mix to the point where you'll see AFRs of 12:1 or even 11.5:1 (like my truck, for instance). Fuel economy goes right out the window, even if you wouldn't have to brake hard.
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