Time to switch forum catagories... new (to me) truck!
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It certainly felt like the EB wasn't working as hard. cruising at 1600RPM vs the 3500-4000RPM of the 5.4. It was still just as thirsty, but I did have a headwind going (got >8 going, >10 coming home w/ tailwind). Happy so far. I do sorely miss the growl of my Magnaflow tuned 5.4.