RPM for best mileage ?
05-04-2010, 06:02 PM
#21
just go at whatever speed you need the least amount of throttle to keep moving. if you go 55 or 60 the whole way, youll be fine.
FWIW, i saw 28-30mpg when i bought my car on the way home from buying it. bone stock, ttops off, cruising at 60 with a few races and runs to 130 mixed in.
FWIW, i saw 28-30mpg when i bought my car on the way home from buying it. bone stock, ttops off, cruising at 60 with a few races and runs to 130 mixed in.
05-05-2010, 12:03 PM
#24
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Okay guys, thanks for the info. I just got back last night. I drove about 350 miles on flat ground, up/down hills and only avg 26 MPG. I drove it at 75 80 MPH most of the time @ 75 MPH the RPM's were 1600. I would like to try for that 29-30+ MPG some of you guys are getting.
05-05-2010, 12:08 PM
#25
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i've gotten 29-31 regularly on trips to sd, completely flat all highway crusin 70-75, i used to call bullshit on my friends 2000 vette claiming to get that milage.. until I got one of these cars, note my car is completely stock, just ordered tune, not sure how it will affect mpg
05-05-2010, 06:02 PM
#27
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I have to say a tune is very important. My 100K+mile car has no cats, don't know if that helps, but after the tune I drove at 70-80mph and got 25-29mpg, even with some heavy footed passes.
This was through the mountains of WV, VA, and NC. I think if anyone drives their car a lot a tune will pay for itself pretty quick, plus you get more power, its a win-win.
This was through the mountains of WV, VA, and NC. I think if anyone drives their car a lot a tune will pay for itself pretty quick, plus you get more power, its a win-win.
05-13-2010, 09:03 AM
#29
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Assume that you travel a set distance at the same speed, first in 3rd gear, then in 4th. Can you see that the engine will turn more times in the lower gear. Each revolution of the engine will "consume" the same amount of air/fuel mixture. Therefore you must consume more air/fuel mixture at the lower gear. Now a lot of modern engines are getting smarter about feeding fuel so, the assumption of a constant a/f mixture may not be valid. With intelligent fuel metering the millage difference may be small.The biggest difference to fuel consumption is your rate of acceleration.
