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Old July 19th, 2008, 07:21 PM   #5
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Join Date: 12-04-07
Location: decker mi
Posts: 133
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The diesel go to guys at Hallis performance in Romeo told me to take the muffler off my stock exhaust on my 99 7.3 and run it. That alone made a diference the turbo spools up alot faster . Then I added a edge evolution programmer and now it pulls my trailer loaded without downshifting with on ton of power. I average around 11.5 mpg loaded.
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