How many miles do you get off a full tank?Only getting 200 driving granny style!
03-21-2009, 03:29 PM
#22
I had a 99 formula with the m6 and all it had done to it was hooker headers and catback with the stock 3:42 gears. I drove across the state wich is all interstate and got over 425 miles to that tank. when I filled up I still had a little less than a 1/8th of a tank. Granted this was grandma driving and the cruise was set at 70 pretty much the whole time.
03-21-2009, 04:01 PM
#25
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How can I get better numbers like many of you? Some suggest to have it tuned, but will that really be a night and day difference?
03-21-2009, 04:18 PM
#26
Oh yeah! I had a bad opti on my car so I replaced that with an MSD cap and rotor some MSD 8.5 super conductor wires and bosh platinum plugs and I saw at least 10 miles to the tank better. It also helped when I replaced the stock air intake with C.A.I and added an air foil. If your in a smog exempt state you can hollow out the cat. I did that to mine and it helped performance and mpg.
03-21-2009, 04:48 PM
#28
i've never actually gotten 285 but i typically get 180-190 on 10 gallons. if the tank holds about 15 then it should be approx that.
bolt-ons/plugs/wires/tune probably help a bit. i use cruise control pretty often and check my tire pressure every few weeks. don't use ac all that much either mostly windows. don't really try but somehow i manage to get good mileage.
i actually tried to see if i could break 20mpg once and ended up getting about 14. now i just drive how i feel like it and get 18-19. accelerating really slowly and keeping the rpm's as low as possible doesn't work for me haha.
bolt-ons/plugs/wires/tune probably help a bit. i use cruise control pretty often and check my tire pressure every few weeks. don't use ac all that much either mostly windows. don't really try but somehow i manage to get good mileage.
i actually tried to see if i could break 20mpg once and ended up getting about 14. now i just drive how i feel like it and get 18-19. accelerating really slowly and keeping the rpm's as low as possible doesn't work for me haha.
03-21-2009, 06:05 PM
#29
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I had a 99 formula with the m6 and all it had done to it was hooker headers and catback with the stock 3:42 gears. I drove across the state wich is all interstate and got over 425 miles to that tank. when I filled up I still had a little less than a 1/8th of a tank. Granted this was grandma driving and the cruise was set at 70 pretty much the whole time.
03-21-2009, 10:07 PM
#32
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gettin right around two fifty here on a tank and i never let it go below and eigth a tank and try not to go below a quarter cuz the gas helps to cool the fuel pump and thats not sumthin i wanna change if i dont have to
03-21-2009, 10:54 PM
#33
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Trust me you do not want to change an f-body fuel pump unless you have to lol. It sucks. To clarify I am getting 16-17 mpg with 90% city. That was prior to the K&N filter, slp lid, msd wires and new plugs. Fuel filter is new tho.
When I bough the car I drove it 250 miles home and I still had 1/4 of a tank. That was before any of the maintenance was done. I do have 3.23 gears which hurts the highway mileage a tad. I usually run 80 on the highway as well. I'm sure 70 would be a little better.
When I bough the car I drove it 250 miles home and I still had 1/4 of a tank. That was before any of the maintenance was done. I do have 3.23 gears which hurts the highway mileage a tad. I usually run 80 on the highway as well. I'm sure 70 would be a little better.
03-22-2009, 04:40 PM
#34
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This about like mine too. When I drove all highway from Orlando FL back to NY when I bought the car I was getting 340 to a tank. Now though with a mix of city and highway I get between 200-250 depending on how I drive.
Just rolled 100k on friday! 
03-23-2009, 02:48 AM
#36
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Maybe a tune would help? You can really smell gas when you're out side the car.
03-23-2009, 09:02 AM
#38
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I never stopped driving, as soon as i filled up i got on the highway and drove it till the fuel light came on. 
