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Old 11-22-2011, 01:27 AM
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Default 89 octane with DSP

I have a '10 5.7 hemi and have used 89 octane since day one. I'm looking to get a tuner and wanted to know if it's ok to move down to 87. I believe you have a choice of tuning to 87 or 92, right?
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Old 11-22-2011, 05:42 PM
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With the predator you can run an 87 tune and still run 89 gas. If you use a 92 tune you need to run 92 gas This is what I was told.
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Old 11-22-2011, 07:27 PM
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Yes, you can run 87 with an 87 tune, 89 with an 87 tune but nothing lower than 91 with a 91 tune.

And I believe you can now get an update from DS for an 89 tune.
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