Join Date: Mar 2008
Location: Wichita Falls
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Did you use a cat delete pipe or just gut it?
Anyways, the DP will help the Turbo to spool up faster and therefor a little earlier RPM wise. I guess you may see 1 MPG increase maybe. You will have a little more power but nothing to brag about.
1997 F350 Crew Cab Dually 2WD PSD 5 Speed Short Range Manual
3' downpipe, Kitty delete, DIY NAPA Filter Intake, Edge Evo Programer on Lvl 1 for MPG