Exhaust and MPG increase

[JD4755]

What have all of you experienced for increase in MPG that went to a total straight pipe.. i was around 14, and it jumped up to 16, even with a heavy foot. That sound about right? I'm tickled pink that I got that much of an increase!

[6.5 Detroit Diesel]

hmm, think i had maybe 1 mpg? congrats on making up those two. sounds better, eh?

[JD4755]

Sounds really good.. looks pretty bitchin' too :D we'll see if it was just a fluke or not when i run a few more tanks of fuel through, hope not!!