New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg - Honda Civic Forum



Fuel, Oil, Cleaners & Other Maintenance Extending the life of your Civic requires the proper fuel, oil, and cleaners, along with other regularly scheduled maintenance.

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Old 05-30-2007   #1
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New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

Finally... Just need to maintain your car, right? I think this is the right forum.

Got the elusive 40 mpg last tank. Hopefully I can replicate this in the times of $3+ pump prices, eh?

I cleaned my K&N, changed out the old Denso plugs (50K miles on them), changed the oil and didn't bring RPMs past 4K and kept speeds below 65 mph.

I figure the plugs will pay for themselves in about 7 or 8 fill-ups because of the 5-7% gain in mileage.
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Old 05-30-2007   #2
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

Nice man...Keep shooting for more though! I've got a catback and intake with stock plugs and I get 44 on the highways usually. Gotta love Hondas...
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Old 05-30-2007   #3
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

I love gas mileage posts. I also love saying that I'm k-swapped and still get 35mpg!
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Old 05-30-2007   #4
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

what did u replace your plugs with? denzo iridium? also i wish i had a 5-speed so i could rack up the mileage...
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Old 05-30-2007   #5
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

I've hit about 510 miles on a tank...k swapped too lol
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Old 06-14-2007   #6
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

bump for my question
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Old 06-14-2007   #7
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

my auto only gives me < 350miles per fill mostly city and thats with denso iridium, intake, and exhaust. AUTOS ftl
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Old 06-14-2007   #8
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

dude my stock auto with a intake gets about 340 to the tank
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Old 06-15-2007   #9
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

Blah..K&N filter and catback has only gotten me up to 38mpg but then again I have 2 12s in the trunk and 17in rims
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Old 06-15-2007   #10
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

damn i get only like 35mpg...w/ 60% freeway 40% city. grrrr
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Old 06-15-2007   #11
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

its fun seeing how people will extend the truth of their mpg. like...everyone.
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Old 06-15-2007   #12
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

i get 400+ miles per tank..most of the time...usually 430-440 with ~11 gallon

i also have K&N replacement filter and exhaust...
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Old 06-15-2007   #13
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

I have AEM short ram, Borla Cat back, two 15's in the trunk and I run atleast 80 mph for an hr a day. 30 min to and from work, in an auto ex (D17). I still get about 32 or 33 mpg. So I am happy with that.
I run Mobil 1 5w 30 tri synthetic oil with a K&N oil filter. Change it every 5000. NGK plugs every couple years and a tranny service every 6 months.
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Old 06-16-2007   #14
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Re: New Spark Plugs + No Speeding + Clean Air Filter = 41 mpg

i like saying i get up to 27mpg fully buil and turbo'd with 440's
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2006, 400, 94, air, civic, cleaning, filter, honda, kn, miles, mpg, plugs, spark, swapped, tank

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