GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Octane question

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Old 11/7/07, 01:09 PM
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Octane question

I know this may sound stupid, but if I get a 92 ocatane tune, and my tank is currently filled with 87, how close to empty should I run the fuel down or does it have to be completley empty
Old 11/7/07, 01:24 PM
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Originally Posted by jmanpatsfan
I know this may sound stupid, but if I get a 92 ocatane tune, and my tank is currently filled with 87, how close to empty should I run the fuel down or does it have to be completley empty
as far down as you can get it, less than 1/4 a tank and you will be fine.
Old 11/8/07, 09:48 AM
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I would think you would want lower than a 1/4 tank. I would run it as low as possible, then put in $10 of premium and run that as low as possible. Then fill it up with premium and load your tune.
Old 11/8/07, 02:19 PM
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Originally Posted by Phorty
I would think you would want lower than a 1/4 tank. I would run it as low as possible, then put in $10 of premium and run that as low as possible. Then fill it up with premium and load your tune.

If he were FI then yes but being NA I think he's ok
Old 11/8/07, 03:17 PM
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Originally Posted by turbo05gt
If he were FI then yes but being NA I think he's ok
Yeah, just don't completely flog it silly on that first tank of premium. Use a little restraint until the second fill up, though it might be easier said than done...
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