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if im tuned for 93oct and i go out of state can i put 91oct in

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Old May 12, 2008, 02:35 PM
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if im tuned for 93oct and i go out of state can i put 91oct in

can i put the 91oct in if i dont full boost untill i get the 93oct back in or is that not good for the engine
Old May 12, 2008, 02:36 PM
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or is it better to get tuned for 91oct and just put the 93oct in when im local?
Old May 12, 2008, 02:51 PM
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Not sure, but the 93 octane gas stations around Northwest Arkansas are dropping like flies. I'm currently tuned for 93, and I'm debating another tune by Mellon for 91 ****-tane.
Old May 12, 2008, 02:55 PM
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does anyone know?
Old May 12, 2008, 02:57 PM
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Originally Posted by bbyevo8u
can i put the 91oct in if i dont full boost untill i get the 93oct back in or is that not good for the engine
You will be fine if you take it easy.

Unless you plan on running 91 on a regular basis, then I would just leave the tune setup for 93
Old May 12, 2008, 03:18 PM
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ok thanks!
Old May 12, 2008, 03:21 PM
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take it easy and turn the boost down a bit too
Old May 13, 2008, 12:59 AM
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you will be fine as long as you stay OFF boost.. that means all boost
Old May 13, 2008, 01:02 AM
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The correct answer is it depends how aggressive your tune is. If you're tuned a at the limit that 2 oct. difference will make a big difference. If you have a conservative tune that means your tune is going to get more aggressive but most likely wont result in knock or any power loss.

Cheers!
Old May 13, 2008, 01:15 AM
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You will most likely see a lil more knock. So make sure you monitor everything and richen things up!

Do a couple runs or just stay out of boost.. .Like its that easy right
Old May 13, 2008, 02:09 AM
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Stay out of boost and you will be fine. Your not gonna damage your motor in vacuum.
Old May 14, 2008, 07:41 AM
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it's already been said but to confirm... if you're tuned for 93 and running 91 stay out of boost the best you can because it's likely to run into some knock.

If you're going to be running 91 octane regularly then it's time to be retuned for it so that you can go WOT without fear of hurting it.




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