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gears 3.69 to 3.91

I have a 2013 nismo tuned 357 rwh. Thinking about changing rear diff gears from 3.69 stock to 2015-18 nismo stock 3.91. Is it worth it cost wise? will i

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Old 07-20-2017, 10:25 PM   #1 (permalink)
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Default gears 3.69 to 3.91

I have a 2013 nismo tuned 357 rwh. Thinking about changing rear diff gears from 3.69 stock to 2015-18 nismo stock 3.91. Is it worth it cost wise? will i feel a difference. and do i need my car retuned if i do go to 3.91?
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Old 07-21-2017, 08:54 AM   #2 (permalink)
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Is it worth it cost wise? will i feel a difference.
You will feel a differential. I will show myself out.
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Old 07-21-2017, 12:12 PM   #3 (permalink)
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you will feel a differential. I will show myself out.
what i don"t get it
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Old 07-21-2017, 01:16 PM   #4 (permalink)
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2 differences, UR top end will suffer
and youll be at the gas pump more
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Old 07-21-2017, 01:53 PM   #5 (permalink)
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what i don"t get it
I believe he's referring to the play on words haha. Different-ial, you will feel different with alternate work on the different-IAL. I can dig it.
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Old 07-21-2017, 03:16 PM   #6 (permalink)
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Old 07-21-2017, 03:18 PM   #7 (permalink)
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I'm considering doing this as well. From what I can gather, you'll only need (not even really need) a re-tune if you have a manual with SRM and want to keep SRM working.
I'm curious to see how 3.9's with nitrous will be
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