Mileage Question
pronounced tech
Joined: Sep 2004
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From: down at Va Beach
im thinking you might have to consider time into the equation. meaning you'll cover more distance when 80mph vs 50mph, allowing you to travel further on about the same amount of fuel...? this is just my own personal guess. not sure if its technically accurate. :P
lots and lots of fail
Joined: Dec 1999
Posts: 23,004
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From: Deeeeeeeeeeeeeeetroit
Originally Posted by jschmid
Yeah, that doesn't make sense...I would think that in theory you would get the best MPG going as slow as you could in the highest gear...so probably more like 45ish. :dunno:
I think I remember reading an auto magazine like back in high school where the authors tried to get the best MPG...and they found the best was had by acclerating up to speed, then coasting down to like 5, accelerating again, etc. Something like that...but it's a fuzzy memory at best.
I think I remember reading an auto magazine like back in high school where the authors tried to get the best MPG...and they found the best was had by acclerating up to speed, then coasting down to like 5, accelerating again, etc. Something like that...but it's a fuzzy memory at best.
I guess for some reason the J30A1 is super efficient at any RPM point below the VTEC crossover.
Senior Member
Joined: May 2002
Posts: 3,049
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From: OH
Originally Posted by TaekOne
im thinking you might have to consider time into the equation. meaning you'll cover more distance when 80mph vs 50mph, allowing you to travel further on about the same amount of fuel...? this is just my own personal guess. not sure if its technically accurate. :P
Originally Posted by 98CoupeV6
That's called 'tap and go'. A bunch of nerds got 100MPG in some Prius' by doing that. It especially works in our cars if you accelerate to 80 then coast down to 40 because our injectors shut off while the throttle is closed above 1100 RPM.
I guess for some reason the J30A1 is super efficient at any RPM point below the VTEC crossover.
I guess for some reason the J30A1 is super efficient at any RPM point below the VTEC crossover.
I'd rather be driving.
Joined: Jul 2005
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Originally Posted by 98CoupeV6
I get my best MPG cruising 75-80. I usually get between 28 and 30. Below that or above that I tend to get 26-27. This confuses me as well.
One trip from NYC to Syracuse I got 30.5 MPG doing between 75-90 the whole way behind fast traffic and I hit 135 on an empty downhill stretch...that was weird
One trip from NYC to Syracuse I got 30.5 MPG doing between 75-90 the whole way behind fast traffic and I hit 135 on an empty downhill stretch...that was weird
One explanation I've heard is that engines make power more efficiently as RPMs increase (up to a point). So it takes more energy to move the car at 75 than 65 but the engine makes up for it by getting more energy out of each ml of fuel injected. I couldn't even begin to explain why that happens but I can't think of any other way that mileage would improve as velocity increases. Maybe it's as simple as VTEC crossover changing valve lift which would reduce pumping losses? Maybe I should get one of those embarrassing ricer VTEC lights and test it out.
Registered User
Joined: Sep 2005
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From: Scotland
Originally Posted by Thooks
Put that bottle down, Scottie.
lots and lots of fail
Joined: Dec 1999
Posts: 23,004
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From: Deeeeeeeeeeeeeeetroit
Originally Posted by exbrick
Maybe it's as simple as VTEC crossover changing valve lift which would reduce pumping losses? Maybe I should get one of those embarrassing ricer VTEC lights and test it out.
For me to be cruising in VTEC in 4th gear I have to be doing around 105.
