PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

More fuel...is it better??

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Old Aug 10, 2002 | 02:50 PM
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Default More fuel...is it better??

I heard that it is not a good idea to race the Z06 with ¼ thank or less, because at this stage the PCM starts “adjusting” probably to stretch the mileage or something. Is there any truth to this….???
Thanks
Dan
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Old Aug 10, 2002 | 06:06 PM
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Default Re: More fuel...is it better??

I have never heard of anything like this.

I wouldn't be concerned at 1/4 tank, because everybody that I know races with 1/4 tank. You might want to concern yourself with the Check Gauges Light (low on gas). I wouldn't be surprised if fuel economy is bumbed with this light on. Good question though.

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Old Aug 12, 2002 | 02:33 PM
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Default Re: More fuel...is it better??

ive always wondered this also in my 98' transam
becuz it seems when it gets alittle low on fuel, it seems like my times are worse.
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Old Aug 14, 2002 | 11:02 AM
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Default Re: More fuel...is it better??

With 1/4 or less you might get less traction that’s why your time would go down.

I have run a half of a tank and had a little better time. Most of my loss in time is caused from my 60 times.

I don’t know if the computer changes the a/f ratio when the tank gets low. I would say it does not.
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