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Old 11-26-2010, 06:02 PM   #19 (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)

blackie - '14 nissan altima sv
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what do you drive

Quote:
Originally Posted by mpgfan View Post
I accidentally stumbled upon this site and have become very intrigued with different ideas to improve my efficiency. I would like a car that can get good gas mileage but can still be pretty quick when needed. I would like to know if anybody has any insight as to how adding things like intake, headers, and/or exhaust to a car would impact its efficiency? Im looking to have a car make decent power while still maintaining the stock fuel injectors and fuel pump. Thanks in advance!
Maybe it's just me but I dislike philosophical bantering.
What do you drive? or want to drive?

For example (and personal experience)
an Infiniti Q45 2002 & newer: for several yrs at the infiniti forum guys tried everything to get more power. chips, cold intake, exhuast mods, all the possible bolt on stuff. Despite the manufacuter claims, NOTHING, I mean NOTHING imporved performance. 3 reasons: 1. the engine was pretty tweaked from the factory 4.5L 340hp (in 2002). 2. the ecm chip was designed to compensate for any changes from stock. 3.........lost my thought.

a V8 mustang. There is alot of room to make increases from the stock setup. THe engine design (obviuosly I'm not talking about the cobra paks etc)allows for alot of improvement.

It really helps to discuss in the framework of a specific car or a couple of cars.
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MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

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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