Made a difference for me...I wouldn't have made a thread if it didn't.

 

its called placebo dude

 

I called about this on my '08 and the dealer said I was still under warranty, but that this TSB does not apply to my '08. I am not impressed with the way the car shifts. If I increase speed on the highway it'll sometimes kick down when I don't think it is called for. Also, going down hill and preparing to turn with my foot off the gas I got a goofy shift and another after I turned the corner and applied a little throttle.

 

You have the 5AT; however, they still may have updates for that. I'd be surprised if they didn't.

 

Question... I have a 09x 7at and I got only one update I believe it was 27c, this cured my harsh down shifts in DS mode.

Is there an update that helps the transmission shift into higher gears when cruising.

My car loves to go into 7th gear when I'm going about 30 or 40mph, the rpms are super low like the cars ideling, then when I give it gas I get no acceleration. It should put me into a higher gear but it doesn't.

 

This was part of my issue. The update I got fixed it. You had no "go" power when needed. Sort of a throttle lag...

 

Is it true that the tranny learns your driving style? If so, how would a reflash help anyone?

 

Exactly, but the flash didn't really help me there

 

I feel a difference, just had it done.

 

Car seems just all around tighter now that shifts/lag has been fixed. Not sure if this is a great explanation but I also feels the car behaves more like a manual and more agile/maneuverableal now. Prior to the update if I was cruising and it dropped gears to 7 my car felt like it was basically neutral coasting (eg. gain speed while coasting down a hill, don't feel any throttle control) and when I hit the gas it would have to grab the gear and start to go. Now after the update when I cruise and not on the throttle it feels like it is still in gear and not just idling (eg if I was coasting down a hill it should slowly slow down). I used to drive manual so I would often let off the throttle stay in gear and slow down and still have that control which AUTOs generally lack. No longer the case so far but I need to do more testing. Downshifts are mapped better and happen when you expect it instead of the throttle lag/waiting for it. Lastly, I think they remapped first gear because I find it holds longer than it used to which makes for a better experience in general. It used to shoot to 2nd super fast as if it didn't want to use first at all.

 

I've really enjoyed the transmission update. The 7AT is still not perfect and there is still some throttle lag, but the update was a big improvement. Kudos to Infiniti for stepping up and addressing this issue!

 

i just went to have it done the other day and i had to pay $120 but does make a noticeable difference and i have a 2008 with the 5at

 

I just had my 09 37x updated (covered under warranty). I did notice a difference, even in regular mode. I thought maybe my transmission was bad, but now it feels more like it should. I can't believe the dealers don't do this automatically.

 

No pun intended.

 

I had this performed on my car about a month ago and honestly the car drives much better than it did when I bought it. The reason I got it done was because it felt like the car had severe transmission issue when down shifting or going uphill. If your G is driving great before hand I would not recommend any upgrade. "If it ain't broke don't fix it"