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new to psd looking for mpg

2K views 6 replies 6 participants last post by  mr.black 
#1 ·
what cheep or free things can we do to my buddies 99 psd? i am a pretty good mechanic and have done work on cummins(i know what to do to them for mpg), i have tools, i just dont know about psd tricks . any help?, thanks.
ps- looking for mpg more so than power. truck is used to pull 8000lbs horse trailer.
 
#3 ·
I would check into making a homemade intake, there are tons of oversized filters, it cant be that hard, otherwise if he gets and extra $500 the regulated return kit for DI or ITP is an awesome upgrade, it smoothed out my idle and gave me a few miles to the gallon!! Good Luck!!!
 
#6 ·
straigth pipe it. Mine is a 6.0 but i gained 2-3 mpg just from removing the cat and muffler. Dont know what gaines would be like on a 7.3.
 
#7 ·
Ya, i'm 4" turbo back and i gained some power!!! (plus being an early 99' lots of sweet turbo noise)!!!
 
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