i gained milage when i replaced my exhaust and intake. when i first got the truck, i was getting about 225 miles per tank. when i replaced the intake with my K&n, it jumped up to about 275, then settled down to 250. then i replaced my exhaust. its a doug thorley cat back, with a glass pack muffler. before i replaced it, i was getting around 250 miles per tank which is about 15 mpg. as soon as i replaced it, it went up to about 300-325, which is about 19 mpg. also, i have LT 235/75 R15's on my truck, and its supposed to have 31's. how much milage do you think im losing through this?

formerly 277000_yota
Old enough to know better, but still to damn arrogant to care...
]www.cardomain.com/ride/2614269
'90 'Yota 4X4 (10/31/05-09/10/08 R.I.P)
'98 'Yota t-100. 3.4, 5 sp. 4x4, 2 in. Toytec with BFG A/T 265/70R16s