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MPG highway v. "around town"

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Old Sep 11, 2006 | 09:04 AM
  #1  
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From: Culpeper Virginia
Default MPG highway v. "around town"

Like the title says, if you're at 5.5K rpms in 6th gear with a stock AP1 are you supposed to be getting better gas mileage than you do at "legal" highway speeds? I got 28 mpg going 5 over and 32 mpg at average ~5.5K in 6th (you do the conversion math )


Around town the gas mileage on this car sucks for what I'm used to from Hondas....I bearly get 23 mpg around town.
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Old Sep 11, 2006 | 09:23 AM
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I just got my car about a month ago. So far with 1,500 miles I average at only 21 MPG. I do half highway and half city driving.
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Old Sep 11, 2006 | 09:24 AM
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I'd suspect that a brand new car would get poor mileage until it's well broken in.
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Old Sep 11, 2006 | 09:29 AM
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I've actually noticed that when I hold the r's @ about 4k in 6th, roughly 70ish, I get better mileage than doing 65 which puts the r's @ around 3.5k. I've never gotten below 26 mpg but my daily commute is 110 miles of rural and state hwy's so it averages higher than if I were to run a tank in the city. I average 28 mpg with peaks just over 30, I probably vtec daily and do 100+mph 2-3 times a week.
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Old Sep 11, 2006 | 09:38 AM
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So if 5.5k is a sweet spot, then we should all get 4.57 gears right? So that we'd be doing closer to the speed limit, but be able to get there much quicker
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Old Sep 11, 2006 | 09:40 AM
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4.77's!
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Old Sep 11, 2006 | 09:47 AM
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when i traveled from albuquerque to dallas i was getting 31mpg. so not too bad at all
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Old Sep 11, 2006 | 09:50 AM
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This phenomenon (of getting best gas mileage just below the VTEC switch in top gear) I have proven true in my 2001 Honda Prelude. It gets 33 mpg at 4,800 rpms (VTEC engages at 5,200 rpms) but only gets 30 mpg at 3,500-4,000 rpms in top gear.

I recall from the discussion that ensued that we came up with the theory that the engine might be running leaner just before VTEC rpms and was in a "power band" so to speak where going up a hill was no lug on the engine at all since torque was higher at 4,800 rpms than it was at 3,700 rpms or whatever on the H22A4 engine.

I would not be surprised if the F20C is doing the same thing!

stay drier in wet weather, and get better gas mileage by cruising faster!
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Old Sep 11, 2006 | 09:53 AM
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Originally Posted by JLUDE,Sep 11 2006, 09:50 AM
This phenomenon (of getting best gas mileage just below the VTEC switch in top gear I have proven true in my 2001 Honda Prelude. It gets 33 mpg at 4,800 rpms (VTEC engages at 5,200 rpms) but only gets 30 mpg at 3,500-4,000 rpms. I recall from the discussion that ensued that we deduced that the engine was running leaner just before VTEC rpms and was in a "power band" so to speak where going up a hill was no lug on the engine at all since torque was higher at 4,800 rpms than it was at 3,700 rpms or whatever on the H22A4 engine.

I would not be surprised if the F20C is doing the same thing!
ooooh research on this I must.
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Old Sep 11, 2006 | 09:58 AM
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So is it better to be at 5.5k in 5th gear instead of 4k in 6th?
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