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Old 02-11-2013, 03:12 PM   #35 (permalink)
Tesla
Master EcoModder
 
Join Date: Feb 2012
Location: Australia
Posts: 355

The Truck - '02 Nissan GU Patrol ST
Thanks: 5
Thanked 76 Times in 50 Posts
Here's a couple of articles/papers,
First is one an F150, economy, & power up.

Aftermarket Exhaust Review: A Review of Power and Fuel Economy Improvements with Truck Exhaust Systems


This on is looking at length and bends in pipe on fuel economy.
http://scialert.net/qredirect.php?do...876&linkid=pdf
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