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Originally Posted by Shenanigans pres
4.7 v8's get 20+mpg out of them on 4 door and ext cab sport models. plus there is a program or some type of chip that can be tuned to get more hp and mpg out of the motors. has anyone heard of any type of chip or anything for the frontiers? cuz ive looked on the net a lil and found nothing.
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I don't know if you're a fan of Consumer Reports (not to be confused with the Consumer's Digest / for profit magazine) but they had a great article recently on EPA fuel mileage claims. Essentially they are all complete bunk. They are based on a 1975 testing procedure for a test mule auto (not even the production vehicle) that's so far off, they voted to shave off 10% city and 22% highway in 1984 and it's still incredibly inaccurate.
(Based on 62%City/48%Highway)
For instance the 2005 Dodge Dacota V8 (4.7L) 5spd claims EPA 15/20mpg but really gets an average of 14mpg (9mpg City 20mpg Highway actual).
They Claim 13/17 in 5.7L Ram but get an average of 11mpg.
To be fair, the 2005 Nissan Frontier 4.0L V6 claims the same EPA 15/20mpg but really gets an average of 15mpg (11mpg City 21mpg Highway actual).
I’m getting exactly 17mpg but I spend more like 60% of the time on the highway.
The Toyota Tacoma 4.0L V6 claims 17/21mpg and gets an average of 17mpg (13mpg City and 19mpg highway)
Anyway, what I’m saying is don’t believe every window sticker you read. You’ll be hard pressed to get 20+ mpg out of a V8 (lifted or not) pickup. Even in a V6 it will be hard. Leaning out the fuel with a chip not only cuts the power you got a V8 for in the first place, it can burn up your engine as fuel acts as a coolant and if you lean it beyond stoic you’ll toast something.