2015 Nismo 7AT Shift Quality
 

Disclaimer: Please do not turn this thread into an AT vs. MT thread; I think we've all wasted enough time on that topic. :shakes head:

Okay, so to my question; I am a proud owner of a '14 base sport 7AT and really love it. I would like to know if anyone has experience in the new '15 Nismo 7AT, and could provide any insight into if Nissan has changed any of the shift characteristics from the base model.

- Does it feel any different than the older non-Nismo 7ATs?
- What about when using the paddles?
- Has it been recalibrated at all in this new application?

Really looking forward to hearing from the people who have driven both.

BTW, I know all about the trans tuning that can be done to quicken the shifts if needed, just interested in how the stock tunes compare in the thread.

Thanks!

It's a 3.6 gear ratio vs the normal 3.36. Haven't test driven it yet.

Meaning lower revs at let's say 100km/h[62mph].?

No, higher. The higher the number, the higher the revs at a given speed, that's a simple rule of thumb, so for example a 3.0:1 gear would have a lower RPM at a given speed vs. a 4.0:1 gear.

How hard is it to change the ratio? In the mustang it was just a drop in part in the rear differential, about $300 to $400.

Will help mpg down low if you drive in town all day, but will hurt highway mpg. Also with this system it could have some wonky effects on the shift points (wasn't an issue on the stangs but i dont know about the z)?

I wouldn't think at nearing the end of production they would change it for basically the same HP and if they did I'm sure they would be advertising it.

They did. It's one of the changes they made on the '15 Nismo.

It's not really a drop-in part. It requires some skill to set the clearances properly so it doesn't whine like a school bus. The labor can get expensive.

If I were going to change the rear end ratio, I'd get the most bang for my buck and add a real LSD at the same time.

They change how the 7At shifts? What did they do?

No, they changed the rear end ratio.

Not sure you noticed, but Nissan does very very little advertising for the Z. In 2011 they changed spring rates and the only reason why i know is because my dealerships GT-R mechanic showed me off the 2010 and 2011 spec sheets. Otherwise....
Who knew spring rates changed from 10 to 11?

buy a manual pumpkin and swap it in

So... Same transmission calibration other than what is required to use a different rear diff ratio?

i'd guess so

you don't really have to change anything to make it work, but they probably did some minor tweaks. you'd have to use uprev to take a look and compare i'm guessing.

That is no good,i always find the car crusing @100 km/h[62mph],at 2000rpm,a tad too high,most cars now only 1700 rpm at the same speed to save fuel.