Hey, How are u doing guys. I just got my first G35s AT today,and I'm wondering when I speed up to 70Mph and I check the Rpm is around 3000 is this normal or I need to do something. cuz it is in "break in" I just want my car is OK.I had a 06 honda civic LX before, no exp w/ any cars else. G35 is my second car in my life.. Thank you.

 

yeah thats about right.....its at 3200ish for 80mph

 

yea, unfortunatley thats right.

 

That doesn't sound right...mine at 80mph is at 3000 rpm.

-Sean

 

that is not possible on a stock car because 6mt is right at 3k at 80mph. At 80 mph 5AT should be well over 3000 rpm.

 

I don't believe so - i was looking at it today actually. I will double check on my way home, but i am 95% sure it was at 3000 rpms at 80mph.

-Sean

 

If you are talking about an 07/08 sedan that sounds about right. The gearing is a bit different in these models as compared to the 1st gen sedans.
On 1st gen automatic RWD sedans the rear dif is 3.357:1 and on all modefs of 2nd gen sedans the rear dif is 3.692:1 so as you can see it is going to rev higher

 

Alright well i just got home from work and while i was on the freeway i double checked and even took some pictures, but the pictures i will have to upload at work tomorrow.

Nothing has been done to the drivetrain - Stock 5 speed auto and differential

80mph = 2800 rpm
83mph = 3000 rpm

 

I'm 06 6MT; At 80 mph, im right at 3000 rpms in 6th gear.

.

 

i concur with this.
5at stock diff here as well.

 

how? how could our rpm's be so high?

 

Thats really not that high...

-Sean

 

if it was not that high then the cars acceleration would suck starting on 1st gear. Those 5 speeds had to be more far apart meaning in each gear u can accelerate longer but slower.

Nismo that is very weird. When u get the car dynoed make sure u pay attention to the speedo and rpm tach and see how inacurate it shows. I know our cars are about 300-400rpm off on the tach at high rpm and show 3-5mph faster on the speedo. Ur tach might be off more than that.

 

According to my AFC it is almost dead on. The actual tach registers within 200 rpm of the afc...like sflg35 said - his is the same as mine.

-Sean