Manual Shift Mode

I personally find the FX faster when driving in manual mode. to me it feels like a whole diffeent beast, especially when i downshift and accelerate
 
Placebo effect i guess ;-)
The auto mode is faster, imo in the manual mode it feels like he engages the tranny mechanically, while in auto mode he uses the hydraulic power of the torque converter.
A torque converter allowes more torque to pass through to the gearbox as the engine is allowed more freely to rev up in higher rpm's and is not kept "stuck" in the lower rpm by the gearbox and in the end the wheels.
By this way you pull longer in the stronger power band of the engine insted of revving up as the car speeds up.
 
Feel like only good use of manual mode is to shift down gears. Say your on the high way and your in 7th gear at 2000rpms, flooring it would have a super slow acceleration so I just down shift and it pulls harder.
 
2010fx35 said:
Feel like only good use of manual mode is to shift down gears. Say your on the high way and your in 7th gear at 2000rpms, flooring it would have a super slow acceleration so I just down shift and it pulls harder.
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I don't know about your tranny but mine goes down 2 gears and i get pushed in the seat if i floor the pedal....although it's not in 7th but in 5th gear ;-)

I like to drive manually when i want to keep the rpm high so i have full power once i hit the pedal....example for overtaking cars. (and in parking garage's ;-)
But then again, when i leave it in auto it downshifts and to me it pulls much better that way acceleration wise when overtaking cars etc.
 
perhaps it's the way I drive, I just feel manual mode pulls harder when upshifting and is more responsive when downshifting to overtake another car. I just feel once your driving auto has a delay where as manual mode is more responsive. Would love to hear from guys who timed themselves doing a quarter mile. Sorry for hijacking your thread OP. Glad you got it fixed and didn't have to go in pocket
 
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I would definitely avoid sudden and harsh engagement of clutch and gears, otherwise the magnet on the pan will finally work and start collecting the tiny metal chunks, the ones that it misses will go and embed on the cooler's inner wall.


Sent from my iPad
 
In auto mode you need to know how to treat it, not like your girlfriend....thats a different story ;-)

But say when you want to overtake a car, if you quickly push the pedal down halfway it will quickly change to a lower gear and gives you the power needed.
When you fully depress it will change down 2 gears but this sometimes is far from needed and i avoid that when not required.
If you do fast actions on the pedal the tranny will respond fast, thats the way it works.
 
Congrats! About time.

I like driving in S mode. Switched to m but not shifting. Keeps it in higher rpms. Unless I'm downshifting, but that's usually for enjoyment. On the highway it's either in 7 or auto.

Sent from my SCH-I535 4 Beta
 
It feels more responsive because you're probably keeping it in the powerband more whereas the auto would have upshifted. Also, when downshifting, you're anticipating flooring it so you downshift. In auto mode, you have to actually press down the gas, wait for the TCU to register, then downshift. That's going to cause a delay. Car won't actually be any faster though. In the quarter mile, leaving it in D will result in the same time. Factory shift points at full throttle are programmed pretty well to correspond w/ the powerband. The speed of the shift itself is determined by the valve body, it doesn't care whether it's auto or manual. At full throttle, the pressure will be the same. If you got a Transgo, that might help some. Only reason to manually shift in the quarter mile is if you've changed your entire powerband.

Haven't run the FX in the quarter since there's no point. But on previous cars that were auto and heavily modified (forced induction) I found zero difference between leaving it in D or manually shifting in terms of the quarter mile. Totally different story if you're on a winding mountain road though.
 
lowKut said:
Folks, after complaining to the dealership service managers and directly to Infiniti consumer affairs I can now breed a little easy after the long run-around.

I dropped off the FX on Tuesday and just got it back.

They replaced the shifter assembly (Transmission shifter control device mechanism, part #: transm-34901cg00a).

I can now easily slide the gear shifter over into manual mode with the tip of a finger. It was definitely fun driving in this mode, however this is something I will not be doing often, but sure glad I have the option to do it when needed.
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Congratulations lowkut, could you please let me know what DTC the technician mentioned in his initial report? Such info would be of a lot of help for others who might run into a similar problem.


Sent from my iPad HD
 
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