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04-25-2008, 03:54 PM
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#1
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Registered Member
Join Date: Apr 2008
Posts: 4
Country: United States
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1998 Civix HX... I want 50mpg!!!
Getting ready to drive a 98 hx from LA to Kansas, I am willing to try some experimentation if anyone has any ideas. tried to pick a time when I could bag using a/c. Want to try and get upper 40's mpg, would appreciate any ideas over highly inflating tires and leaving windows up. Thanks, Frank
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04-25-2008, 04:07 PM
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#2
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Registered Member
Join Date: Feb 2007
Posts: 244
Country: United States
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My wife has a '98 HX and regularly gets 46 - 49 mpg during the summer on mostly highway, 65-75 mph driving and a bit of stop and go rush hour traffic. The only things I've done are
1) overinflate 35 max psi tires to about 38 - 40 psi, and they weren't LRR tires anyway. I just bought 4 new Nokian i3 tires to replace them. Haven;t had a full tank yet to calcualte the MPG.
2) formed a small piece of coroplast behind the driver's rear tire and attached it to the underside to direct the air under the car out underneath the bumper rather than directly into the inside part of the bumper to prevent the parachute effect. the same could be done on the passenger side, but I haven't gotten around to it
3) lower grille block
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04-25-2008, 06:30 PM
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#3
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Registered Member
Join Date: Aug 2007
Posts: 652
Country: United States
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From my highway driving experience with my VX civic, I've found that if I can avoid going too much over the speed limit my MPG will go up dramatically.
Most used cars I've bought have always needed a tune-up, so I wouldn't get too disappointed if you don't reach your 50 MPG goal quite yet. I'm sure it'll be possible in the future once you get used to driving the car more.
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On the never-ending quest for better gas mileage...
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04-25-2008, 08:29 PM
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#4
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Registered Member
Join Date: Apr 2008
Posts: 4
Country: United States
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thanks for your help, I am going to try the under car trick, thanks
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04-26-2008, 02:33 AM
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#5
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Registered Member
Join Date: Oct 2005
Posts: 1,460
Country: United States
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I get 50mpg at like ~60mph and i have a dx...just slow down or drive after trucks...even 3-4 cars distance from the trucks they absorb most of the wind..
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04-26-2008, 04:21 AM
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#6
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Registered Member
Join Date: Feb 2007
Posts: 244
Country: United States
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Quote:
Originally Posted by Compaq888
I get 50mpg at like ~60mph and i have a dx...just slow down or drive after trucks...even 3-4 cars distance from the trucks they absorb most of the wind..
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Compaq, your gaslog only shows 44 mpg for your best tankful, nothing close to 50 mpg. Or were you referring to the instant readout on the Scangauge when driving 60 mph or behind trucks?
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04-26-2008, 04:40 AM
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#7
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Registered Member
Join Date: Mar 2008
Posts: 105
Country: United States
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Do you have a good synthetic transmission fluid in the car?
Also rip out any extra weight you may be hauling around with you.
Make sure you have a new air filter in the car when you leave on your trip.
Also run a good fuel system cleaner through the fuel system. Redline S1 and Techron are two very good over the counter products.
Also if your capable of doing it leave at 8 pm on your trip. That way you will not be driving in the hot sun. The first 10 hours would be under nightfall and cooler temperatures. There would be less need for the AC to running during the night hours.
I would caution you if your not a "night" person driving all night can be dangerous.
At least 3 to 4 mornings each week a trucker falls a sleep on the Pennsylvania Turnpike causing one side or the other to close for a few hours for clean up.
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04-26-2008, 06:28 AM
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#8
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Registered Member
Join Date: Apr 2007
Posts: 336
Country: United States
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you can break 50 mpg easily. i averaged 45 mpg with a ex transmission when i did 70% highway and 30 city. now i do 100% city im getting 35
on a road trip, i averaged 46 mpg going 70 mph at 3000 rpm on my ex tranny, you should get at least 55mpg if driven slowly
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04-26-2008, 03:34 PM
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#9
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Registered Member
Join Date: Oct 2005
Posts: 1,460
Country: United States
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Quote:
Originally Posted by cems70
Compaq, your gaslog only shows 44 mpg for your best tankful, nothing close to 50 mpg. Or were you referring to the instant readout on the Scangauge when driving 60 mph or behind trucks?
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I drive rarely on the freeway now...in fact the last 2 weeks I was only on the freeway for maybe 15-20 miles..
I was referring to the Scangauge 2 readout when I drive 60mph..it shows 50mpg or sometimes more. Driving behind trucks usually the readout dispalys from mid 50's to high 50's mpg...
I'll start driving mostly freeway at the end of May so the numbers should go up..
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04-27-2008, 07:13 AM
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#10
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Registered Member
Join Date: Apr 2008
Posts: 4
Country: United States
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mpg
great info, thanks everybody!!!!!!!
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