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gas mileage? tunning?

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Old Nov 1, 2001 | 01:48 PM
  #1  
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Default gas mileage? tunning?

while sitting in class the other night i figured out that for every mpg that i increase i will save $67 a year. Currently its been about 9mpg. first thing I'm checking is my timing, i have also bought new plugs and wires. the mixture is set pretty good i think is there a scientific way to tell ( how hard is it to install a o2 sensor?) what else should i change or check to increase my mpg? thanks.

454 w/ true duels no cats
stock automatic w/ 3.7 gears
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Old Nov 1, 2001 | 02:16 PM
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Default Re: gas mileage? tunning? (ykp53)

I increase from 8 to 11 mpg just by cleaning the carb and changed the power valve and gaskets (Holley 850DP).

O2 sensor! Check out: http://www.markvanderkwaak.com/dbbp/tech-tips/mm.html
and http://www.diy-efi.org/diy_efi/proje...ED/O2_LED.html

Good luck!


[Modified by Lasse, 7:18 PM 11/1/2001]
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Old Nov 1, 2001 | 03:02 PM
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Default Re: gas mileage? tunning? (ykp53)

You are going to come up against a wall real quick with that performance rear end gearing.If you keep buying stuff to increase your mileage your going to eat up all your savings.Put the car in top tune and forget about it.Your driving style will have a big effect on your gas cosumption.
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Old Nov 1, 2001 | 03:21 PM
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Default Re: gas mileage? tunning? (a smith)

Hook up a vacuum gage and watch what happens as you drive. If you control your impalse to spin the tires, you can achieve better MPG.
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Old Nov 1, 2001 | 03:52 PM
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Default Re: gas mileage? tunning? (ykp53)

I improved my gas mileage by about 10% by putting a carb cleaner gas solution into my gas tank. I try to to this with every oil change. Another suggestion would be to buy a new air cleaner or clean your K&N.

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Old Nov 1, 2001 | 04:01 PM
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Default Re: gas mileage? tunning? (ykp53)

I would have to say ...Buy a toyota for mpg....Keep the vette for FUN
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Old Nov 1, 2001 | 04:28 PM
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Default Re: gas mileage? tunning? (Alwyn678)

I'll have to agree on that one. A 454 was not made to get good gas milage.
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Old Nov 1, 2001 | 06:28 PM
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Default Re: gas mileage? tunning? (shamby)

dont get me wrong guys. im not expecting something in the mid 30's like my wifes car. i just thought double digits might be nice. its a good thing i only drive it 2 miles a day.
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Old Nov 1, 2001 | 07:33 PM
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Default Re: gas mileage? tunning? (ykp53)

good thing i only drive it 2 miles a day.
That may be part of the problem. Does the choke even open up all the way?
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Old Nov 1, 2001 | 08:10 PM
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Default Re: gas mileage? tunning? (AlwaysWave)

after setting it properly( i talked to lars) it works good. one thing i have noticed is since i got it the oil pressure bounces when it is idleing but is constant when driving, is this a sign of a major problem? could this effect the gas mileage?
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