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09 Altima 3.5SE 6MT Sedan
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6,365 Posts
If you try this, don't forget to reset the ECU's air fuel map. Basically start the idle relearn, or you will notice a lot of predetonation until it eventually figures out the new optimal mix of air and regular fuel.
 

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04-05 Pedal Insert
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5,767 Posts
Discussion Starter · #3 ·
I have not put premium in my 2012 yet.

My 2002 always got premium, only option according to nissan an my owners manual
 

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90 Posts
I have not put premium in my 2012 yet.

My 2002 always got premium, only option according to nissan an my owners manual
I notice in my 2012 SR that it does run smoother and has a bit more zip.
People have shown that premium gave them more mpg or km/l.
 

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Registered Boozer
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310 Posts
It didn't work out for me when I tried mid grade a few years ago. Probably needed a map reset, but I had really bad knock when slowly accelerating somewhere between 1500-2000 rpms.
 

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04-05 Pedal Insert
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5,767 Posts
Discussion Starter · #6 ·
Where you guys live? Really H0t??
 
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