1994-2004 V-8 GT, GTS, Bullitt, Mach 1, and Cobra

what type of gas?

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Old 10/21/12, 02:40 PM
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what type of gas?

what type of gas do you guys recomend? regular or premium, 2000 mustang gt with a BBK air intake and aftermarket headers and exhust
Old 10/23/12, 01:46 PM
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Originally Posted by dj050894
what type of gas do you guys recomend? regular or premium, 2000 mustang gt with a BBK air intake and aftermarket headers and exhust
What's your manual say?
I use 93 but that's what my car was tuned for
Old 10/23/12, 09:20 PM
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I would just use regular unless your car is tuned for 93.

Last edited by BA Mustang; 10/23/12 at 10:15 PM.
Old 10/23/12, 10:07 PM
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regular is just fine. Once you start getting a tune, you can run whatever you like.
Old 11/2/12, 10:03 PM
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The car was set up for regular cause the compression ratio is low enough now even if your car is "tuned" for it really doesn't matter unless you increase your compression ratio
Old 11/2/12, 10:14 PM
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Originally Posted by shaunrc
The car was set up for regular cause the compression ratio is low enough now even if your car is "tuned" for it really doesn't matter unless you increase your compression ratio
Compression ratio isn't the only thing that matters when it comes to what kind of gas you can run on a tuned car.
Old 11/2/12, 10:23 PM
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Just run 93 that way you don't have to be concerned about it.
Old 11/7/12, 11:07 AM
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Originally Posted by BA Mustang

Compression ratio isn't the only thing that matters when it comes to what kind of gas you can run on a tuned car.
So what else is there to take into consideration?? I'm curious
Old 11/7/12, 12:16 PM
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When you change the timing around you will need to compensate with a higher octane. If you don't it will cause detonation, which can destroy an engine fairly quick.

Normally a tune changes the fuel, timing, and possibly more. However, I have heard that the timing is mainly changed up top and as long as you don't go WOT and really get on it you can run a lower octane.

Last edited by BA Mustang; 11/7/12 at 12:27 PM.
Old 11/11/12, 10:45 PM
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i think im just gonna run 93 to be safe, with all of the aftermarket parts in it, and with 153k miles, the last thing i need is to screw up the motor.
Old 11/12/12, 01:20 PM
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Run regular unless your car is tuned. 93 isn't gonna do any good without a tune even with your mods. You're safer choice is to use regular until you get a tune
Old 11/12/12, 02:07 PM
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Originally Posted by Jet Life
Run regular unless your car is tuned. 93 isn't gonna do any good without a tune even with your mods. You're safer choice is to use regular until you get a tune
+1..
Old 11/12/12, 02:07 PM
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but only having it for just over a month i really dont know if its tuned or not
Old 11/12/12, 08:39 PM
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Originally Posted by dj050894
but only having it for just over a month i really dont know if its tuned or not
Doubt it. Seems like a tune would be a good selling point and the person may have even offered to sell you the tuner if they had it. But if the person decided to keep the tuner, they have to return the vehicle to the stock tune in order to un-marry the tuner to use the tuner on another vehicle. I mean it's possible you have a tune but pretty unlikely. Also you don't have any mods that would require a tune. All those mods work fine without a tune.

Last edited by Jet Life; 11/12/12 at 08:42 PM.
Old 11/12/12, 08:40 PM
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Also if they person that sold it to you had a tune that required 93 octane it seems like they would have mentioned that to you. I'd play it safe and put in regular gas. That's your best choice IMO
Old 11/13/12, 06:04 PM
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like i said i bought it from a dealer, so...
Old 11/14/12, 08:25 AM
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I would still run 87.

Last edited by BA Mustang; 11/14/12 at 10:57 AM.
Old 11/14/12, 10:02 PM
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Originally Posted by BA Mustang
I would still run 87.
Agreed
Old 11/15/12, 12:48 AM
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the cold air intake makes it stall out occasionally, i guess the fuel to air ratio is off or something idk, but ive noticed that it occures far less with 93 than 87
Old 11/15/12, 05:28 AM
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Originally Posted by dj050894
the cold air intake makes it stall out occasionally, i guess the fuel to air ratio is off or something idk, but ive noticed that it occures far less with 93 than 87
Are you sure it's the CAI and not a vacuum leak


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