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Old 06-11-2008, 10:55 AM   #1 (permalink)
Rapidly Evolving Driver
 
Join Date: Jun 2008
Location: SF Bay Area
Posts: 35

Brick House - '04 Scion xB
90 day: 36.44 mpg (US)
Thanks: 3
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First long trip - 49.7mpg from an xB!

Hey all,
I've owned the car since 2004 when they first came out and my previous best mpg for a long trip was about 35mpg. Stock tires, cold air intake and exhaust, lowered 1.75". On my first hypermiling long distance trip yesterday I got 49.7! That's like $3.15 gas at the old mpg! Did the following:

1. Inflated tires to max psi of 44 at about 65 degrees F
2. Left early for Bay Area to Santa Barbara trip, about 4:30am to miss traffic
3. Drafted larger trucks where applicable, but not excessively
4. Did P+G, often pulsing up to trucks and gliding back. Max speed probably 75, min speed 40 for the entire trip, usually 50-70mph.
5. Did some EOC on some of the longer hills
6. Shoes and socks off of right foot for better pedal feel.

I'll see what I get on the way back!

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Old 06-11-2008, 11:16 AM   #2 (permalink)
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Join Date: Feb 2008
Location: VA
Posts: 313

4x4 - '06 Nissan Altima 2.5 Special Edition
90 day: 29.04 mpg (US)

Mom's Van - '99 Plymouth Voyager SE
90 day: 25.62 mpg (US)
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Woot! Great numbers. How much FE did you earn by the exhaust? I can only imagine what a member on here with the xA would be able to achieve on the same trip.
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Old 06-11-2008, 11:23 AM   #3 (permalink)
Rapidly Evolving Driver
 
Join Date: Jun 2008
Location: SF Bay Area
Posts: 35

Brick House - '04 Scion xB
90 day: 36.44 mpg (US)
Thanks: 3
Thanked 0 Times in 0 Posts
not sure, heh. I just started really logging mpg for the first time in years. I assume that by putting cold air in and freeing up the exhaust it helps mpg as well as performance. Could be less backpressure, though, with a larger exhaust, so not as good at low rpm? The manual tranny on the xB spins pretty high in 5th gear on the highway, so I imagine the better breathing exhaust helps!
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Old 06-11-2008, 12:02 PM   #4 (permalink)
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Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,179

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)
Thanks: 2,477
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Congrats on the mileage! Feels good eh?

Cold air intakes and larger exhausts usually hurt FE. The exception to the rule is a turbocharged engine which benefits from a larger exhaust.

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