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which is better for economy: Fuel saver or 87 octane?

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scallen
 Post subject: which is better for economy: Fuel saver or 87 octane?
 Post Posted: Sun Mar 13, 2011 10:41 pm 
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Joined: Sun Mar 13, 2011 9:44 pm
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Have an 08 5.3L Avalanche LTZ. What is the performance and mileage difference between 87 octane and Fuel Saver programs?
Thanks
Sean
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RON @ SUPERCHIPS
 Post subject: Re: which is better for economy: Fuel saver or 87 octane?
 Post Posted: Mon Mar 14, 2011 10:03 am 
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Joined: Tue Jul 25, 2006 9:41 am
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Location: SUPERCHIPS
What is the 8th Digit in your trucks VIN?

We know that their are 3 different 5.3L motors in 2008.

They all make different power outputs.

Ron

I personally recommend the 87 tune over the MXS tune for power and mileage.

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