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Old 07-20-2015, 07:20 PM   #6 (permalink)
mcrews
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Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

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Quote:
Originally Posted by RedDevil View Post
regular unleaded gas?
Not everybody would agree, especially on a high compression engine higher octane can yield better economy as they tend to ping on regular, forcing the ECU to alter the timing.
exactly!
When I had the Infiniti Q45, I tested running regular and high on my trips to texas. The ecu would alter the timing and reduce the mpg.
On newer cars (the Q45 was an 02) run what is recommended. THe ECU KNOWS!
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ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
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