a bit hard to believe - 2003-04 Mach 1 Registry Owners Club

311-420 · 03-30-2017, 05:25 PM

Since I eaton swapped I noticed my fuel mileage really hasn't gone down which I thought was a bit unusual. Adding 135rwhp should do that, right?

I topped off the tank and ran it out until the fuel light came back on and then topped it off again at the same gas pump. It went 220 miles all city on just 12.66 gal. That's a city avg of 17.3 which is higher than my window sticker says (17 city, 26 hwy). I boosted ever so slightly many times during the tank, but no wot/full boost. I think I could get 18+ if I was actually trying.

03-30-2017, 05:25 PM	#1
311-420 Can't be bridled Join Date: Sep 2007 Location: Texas Posts: 7,006	a bit hard to believe Since I eaton swapped I noticed my fuel mileage really hasn't gone down which I thought was a bit unusual. Adding 135rwhp should do that, right? I topped off the tank and ran it out until the fuel light came back on and then topped it off again at the same gas pump. It went 220 miles all city on just 12.66 gal. That's a city avg of 17.3 which is higher than my window sticker says (17 city, 26 hwy). I boosted ever so slightly many times during the tank, but no wot/full boost. I think I could get 18+ if I was actually trying. __________________ 2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁

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