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Old 07-27-2013, 12:11 PM   #1 (permalink)
cbaber
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Join Date: Feb 2012
Location: Missouri
Posts: 540

Lean and Mean - '98 Honda Civic HX
Team Honda
90 day: 46.69 mpg (US)
Thanks: 30
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15 more PSI = 7% better MPG

I filled up last night and this tank was the first tank with the tires pumped up to 45 PSI. I originally had them at 30 PSI. This is my 4th fillup this month, and the others have been around 41-42 MPG. For the tank the only thing that changed was the tire pressure, and I managed 45 MPG. Thats about 3 MPG, or 7%.

I think I can do a little better on the next tank, as 50 miles of this tank were still on 30 PSI. No driving techniques or modifications on this tank. I have one rule, speed limit is 60 mph. I'm going to do a couple more tanks at 44 PSI, then a few at 60 PSI to see what effect it has. By that time I should be ready for my alternator delete (almost done, just need the battery) and power steering delete. With those mods I hope to be around 50 MPG without any advanced driving techniques or aero mods.

Update 8/20/2013
3 tank average at 30 PSI = 41.4 MPG
5 tank average at 45 PSi = 45.4 MPG

(4 / 41.4) x 100 = 9.6 % gain


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Last edited by cbaber; 08-20-2013 at 07:49 PM..
 
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