I just bought a G35x. The car seems to shift EXTREMELY slow under full throttle conditions. It feels llike I am counting 1,2,3 shift. Is there any way to speed this up?

 

You mean in "manual mode" I assume? If that's the case, then it's not shifting slow, it's just shifting when it wants to.

The manual thing is a top-gear selector, not a current-gear selector. If you put it in 3, it's a 3-speed automatic. If you put it in 2, it's a 2-speed automatic. Etc. You can force a downshift (if it won't overrev the engine) but you can't force an upshift.

 

I disagree. My '04 G will not upshift without my assistance. It will stay in any gear all the way to redline.
I have verified this many times.

 

It won't go above whatever gear you select in manual mode. However, if you're at full-throttle and you hit the lever to upshift early.. it'll still hold the gear to redline. Why? Because you're under full-throttle, and that's what automatic trannies do. If you leave it in D or stick it in 5, you'll find that it will shift up and down through the gears on it's own.. at redline under full throttle, and earlier under part throttle.

 

I'd like to figure this out once & for all..
I'm driving down the road in D. I drop to auto & the selecter shows 4. At this point I can drop to 3 manually. When I come to a stop, the selector shows "1". As I accelerate from stop, I have to manually upshift to 2 & 3 & so on or the car stays in the gear showing in the display.
In other words, If I enter manual mode @ 4 & never touch the shifter all the way to a stop, the tranny will down shift for me but will not bring it back up to 4th by itself as you stated.
Get it? or is that what you were tyrying to say?

 

What I mean is the time it takes the car to actually perform the shift whether in auto or manual mode.

I had an Acura CL-type S before and when you are under full accelaration and the revs are nearing the redline the car shifted into the next gear fairly quickly, it now seems like the G35x takes an unusually long period of time to go into the next gear. I know its a luxury/sports sedan and most people dont want a POP SMACK shift, but this is just too long.

Do they make a shift kit for these cars??? I want the car to POP right into the next gear not take 1-2 seconds between shifts.

Does that make any sense???

 

Ahh... I see what you're getting at. I'd say my car, while not an AWD, never takes more than a 1/2 second to complete the actual shift, once it's started. It's fairly quick and smooth. Perhaps you should have your dealer take a look at the issue.

 

Sounds like you need Hyper Grounding ;-)

 

If you have it in Maunal Shift mode @ 4th gear as you come to a stop it should still show "4" on the display but you will actually start out in first and progress to fourth as you pull away. The shifts with reflect your accellerator pedal manipulation (i.e. if you "putt away" it will shift at lower RPM points. Floor it and it should shift close to or at redline.) This is how my '03 1/2 acts. Maybe the Xs are different.

Obsidian/Graphite; Premium Pkg; Aero Kit; Suspension Kit; Nav Sys; Sunroof; Clear side markers. Next...GroundingGear

 

austinteddy, when I come to a stop, it says "1". Since you have an '03 G, I think it is a new feature in the "04 model. I don't have a X, just a '04 G35 auto.
I would like to confirm this with other 04 drivers so I know I'm not crazy!
Anyone?

 

For what it's worth, GeezerB also said he has an '04. So, the difference in auto stick behavior may be due to the model year, and not just the fact that it's an X. I will say that the 03.5 G is the first car I've driven that doesn't auto downshift (i.e. lower the gear selection number). I too used to own a CL-S, and I'm pretty sure it downshifted automatically WHEN COMING TO A COMPLETE STOP, as well as an auto-upshift from 1st to 2nd (but not beyond) in case you forget you're in manumatic. I know for a fact, at least on earlier models, that the Audi A6 auto downshifts. So, I'm guessing it's possible that Infiniti got in line with the rest of the manufacturers starting in 04. Personally, I think this design is better in that it more closely mimics a stick.

03.5S DP / Prem / Sport / NAV
18" Coupe Rims w/ S-03 245/45/18
Eibach Pro Kit
Injen CAI
Z-Xtreme Grounding Kit
Upgraded sound (Infinity / MTX / Alpine)
Crawford Plenum (next)

 

Apologies re my previous post... GeezerB and I must have been posting at the same time, so forgive me for making the same point regarding model years.

03.5S DP / Prem / Sport / NAV
18" Coupe Rims w/ S-03 245/45/18
Eibach Pro Kit
Injen CAI
Z-Xtreme Grounding Kit
Upgraded sound (Infinity / MTX / Alpine)
Crawford Plenum (next)

 

Mine is 03.5 auto model, and I don't like the maual mode since it works like top-gear selector. I want 04 model maual mode.
Is it possible to modify my tranny or tranny program?

2003.5 Sedan AT
Bullet 6" 20" resonator, JWT Pop Charger & 350z Tube

 

My car in Manual will automatically shift from 4th to 1st at a dead stop.

I do notice that if you leave the car in D it seems to shift slower in D than it does if I put it in Manual Mode.

Any shift kits available???

 

I think most of the posts are not addressing the original Yano post. He isn't asking about how the manu-matic works, he is having problems with the G35X transmission not responding quickly under full throttle conditions. I have a G35X and have 2 things to say about the tranny that bug me related to lag in shifting in the auto tranny (mind you, they just bug me a little bit, I can live with these minor nuances). First, when my G35X is in the full automatic mode ("D"), I've noticed that it downshifts with a slight lag only from 5th to 4th gears. For example, if I'm traveling at 65 MPH and I want to "punch" it to pass, there is short lag time to downshift to 4th - maybe not 3 seconds as suggested by Yano, but a definite, "c'mon, oh there it goes". This delay is perceptible, but it's much less time then for me to say "hmm, I want to pass quickly at highway speeds, I can move the stick from "D" to manu-matic, then shift it down into 4th gear so I don't feel the slight delay in "D" that sometimes bug me" - you get the point. Interestingly, I don't feel this lag when I'm passing at slower speeds (i.e. when the car is NOT in 5th gear) - so when I'm at 30 mph in "D" and want to get around someone, the tranny seems to downshift without that perceptible lag detected at higher speeds. Maybe it's all in my head, because things are happening faster at 65 mph compared to 30 mph and I'm expecting an equally faster tranny reaction. The second thing that bugs me is that when I put the tranny into manu-matic mode (when the indicator shows a number), there is a definite lag between the time that I physically upshift and when I feel the transmission actually shifting. For example, when I start from a stop, the gear is at 1. When I shift to 2 there is a perceptible lag before the transmission actually goes into 2nd gear. When I shift to 3, same thing again - that lag. I've compensated now to shift that much earlier to take out that lag. I've driven manual transmissions with clutches my whole life and the manu-matic obviously is a different beast. I think that the whole motion of depressing the clutch, shifting gear, releasing the clutch is now expressed in the lag that I feel. I realize that I'm equating the manu-matic to a video game stick - c'mon now, when I put it in 3, shouldn't the tranny instantaneously be in 3rd gear? Obviously, the manu-matic is NOT a video game stick.

Sorry about this long post, but of the 2 things I presented above, the thing that bothers me more is that downshifting lag while driving in "D" at 5th gear. I'm not sure that there is a quick fix. For some reason I remember reading threads about adaptive programming that the tranny goes through determining the driver's style. Obviously, my G35X is fairly new and I haven't been "punching" it in "D" from the time I got it off the lot. However, I don't think there is any software related to how the G35X shifts in "D" mode.



G35x/brilliant silver/graphite leather/premium package