G35Driver - Infiniti G35 & G37 Forum Discussion

Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

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Old Jun 21, 2007 | 01:38 PM
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From: Meifumado
Originally Posted by groovy4
Thank you all for your feedback


How's fuel economy after installing headers? Eats up more gas I assume?
After the HFC install and the Tsquare relfash--I actually am getting better gas mileage (+2mpg on average 20 for city--no joke) if I drive "normally". If I'm driving aggressively (which is a lot, lol) mileage decreases (16-18 mpg). hope that helps
 
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