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I just got 2 1/2" exhaust put on from the cats back, and the head was cleaned up without changing anything in it this last June. Last tank as 13.6 mpg in the city. Have yet to check highway with the new exhaust, but I was only getting 11 city before the exhaust - so I should see some gains over the road too. All stock rig, except for the 31.5" BFG A/Ts. I am having the head and manifold port/polished and a valve job done after the first of the year - should see some gains then too.
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