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Orion Reflash System for Navistar
Power Hungry Performance is the first in the industry to provide custom tuning for the 1998 to 2007 Navistar Medium Duty platform!

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  #24  
Old Thu, November 18th, 2021, 11:28 AM
Absolution Absolution is offline
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Join Date: Dec 2020
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Originally Posted by Power Hungry View Post
Just scooting right along! How's the fuel economy? Any noticeable difference on long hauls?
It actually seemed to stay the same. So it didn't get worse at least giving how much of an improvement was made. I really think a transmission with an OD in the flat land would really raise it though. My reasoning for this is I'm watching the fuel gauge and the mountains aren't what pull it down. It's the final leg doing 2600RPM non stop when it doesn't need too.

I'm actually washing off the vehicles right now. Then I'm going to to gas station. I think I used 65-68gallons on way up. But I'll find the receipt.

Last edited by Absolution; Thu, November 18th, 2021 at 06:12 PM.
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