After the new program, I find the D mode to be just about right... There is no more unnecessary downshifting nor aggressive rev matching. The DS mode is now finally useable. Before it was far too aggressive and crazy at times. Now it's just aggressive and gives you the "entertaining" rev matching downshifts under moderate-to-hard braking, but it is not over the top like before.

 

That sounds good and glad you agreed about the old DS mode.

Can you confirm that DS still downshifts (much) more aggressively than D when coasting (no throttle and no brake)? For me, the pleasure of that is not needing to use the brake in most moderate traffic situations. I hate automatics that coast so slickly that you are constantly needing to be on and off the brakes in traffic. It's almost enough to make one use a clutch...almost! ;

Can you confirm that D still has the "panic braking" downshifting? That it will downshift aggressively when you are using unusually strong (i.e., not everyday levels) braking?

Thanks so much.

 

Hey everyone, I joined the site when i got one of the earlier production 2009 g37s and i posted one of the first tsb's on the initial crapomatic spazzbox 7at. I've had a couple more software flashes updates whatevers but every time i updated the software in hopes of something better things just got different. So i decided to forget about it and get used to it. That i did but the car does hesitate on shifts and more. Throttle tip and response is still awkward and I'm just wondering if these new posts i'm seeing are in response to a new tsb (within last 6 months) and if it really fixes the acceleration issue. Living in chicago its a bitch of a lag.

 

yes, for the 2010-2011 so far. not available for 2009 yet.

 

mike, Agreed, exactly on....The DS mode has been "Numbed"...a little De-Balled. But tht's the price of this Reflash. It says so in the TSB. With over 800 miles since the Reflash, I have experienced a little Quirkiness return now and then. But Bottomline: It is Definitely Better than before. My biggest gripe is that at 1500 RPMs at local road speeds 35-40 MPH, I sense that low torquey Like rumble. I feel the Torque Converter Lockup. If i hit the throttle it responds more quickly than before {I did experience One Lag while coasting the other day], IMO still has a little more way to go. I'm Happy for Now.

 

Almatti--can you answer my questions from post above? You are one of the few who pays enough attention to be able to answer.

 

I just had the ITB12-027 TCU/ECM reflash performed on my '10 G37x yesterday. I brought the car to the dealership at 9:30 AM and they had the work finished at 3:00 PM. No problems or arguments from the dealership about doing this TSB work.

My initial driving impressions are similar to what others have said after having this reflash done in that there is definitely an improvement (more rapid and less lag) in throttle response after coasting. The tranny also appears to do less “gear hunting”, as well as have smoother downshifts when braking to a stop.

While I definitely need to get in a lot more road time before I can accurately access the changes and degree of improvement from this reflash, (including how much it affected performance in the DS mode), so far my impression is overall positive.

 

In my observations so far, no, it does not aggressively downshift in D under spirited braking, and I think I would have seen it by now because my regular "spirited" braking might be considered "panic" to some hehe. It is just a natural downshift with a little engine braking but it is not so much that you say "hey what was that about?!?!". With the old program D would sometimes get aggressive with the downshifting and it was too much IMO. DS definitely still does a nice aggressive downshift under strong braking but again it is not "crazy" anymore. I am happy that D no longer does the sudden big downshifts under braking because I really wanted it to be simply a spirited transmission in D but not an overly aggressive one - Infiniti has accomplished that finally. Both D and DS are useful now for me depending on what I want at the moment. Again I'm quite pleased now and have moved on to doing some personalizing of the car now that I'm keeping it, after waiting in limbo for a year wondering what to do.

 

I WANT THIS FOR MY 2009 NOW! I Only have 36K miles and I'm not replacing it anytime soon!

 

And the "normal" downshifting while coasting? I know for D it is now much like any other auto car. What about DS?

The panic downshifting is a safety issue in my opinion. It should be left in when it is truly a panic stop.

 

Yes it behaves a lot like most other cars while doing normal driving or coasting in D... But it's still a G, meaning it still has a spirited personality you could say. Which is exactly what I wanted for D. In DS it downshifts more but not too much,,, unless you apply the brakes firmly, then you get that nice downshift rev matching.

For most drivers, I don't think the sudden revving is a good idea for panic stops in D. The brakes are more than capable of stopping the car, far more than any contribution from engine braking when stopping hard. I found the sudden revving pretty distracting when I did not expect it. I suspect most other drivers did too. I felt that it should not do that in D.

If you are going down a hill and braking and the engine braking effect is useful, then yes it does downshift on its own, but again, it is not excessive and distracting like before.

Most people don't expect a car to go "ZOOOOM" when you slam on the brakes. So I think it is good they got rid of that in D and left it in DS but calmed it down slightly.

It is still a lot of fun in DS with the downshifting when you brake, but it's not crazy/nutty/harsh about it anymore. If one wants to be more aggressive, just use the paddles. Before there was no refined option because the trans was being aggressive and random and harsh all the time even in D.

 

I've been having problems with down shifts on my '09 G37xS as well as when I am starting from a complete stop but on a hill, going downhill, it seems to take the tranny a couple of seconds to get it into the right gear, but I called my local Infiniti dealership today and I will be taking it in for the TSB and I will post what my results are as soon as I know.

 

Marc, You askd about my response. Mikeb has said it very well. I experience the same. One comment about the coasting Post Reflash, seems to me to hang in the higher gear longer so you coast a little faster. DS mode modifies that a Little....different than Pre Reflash. We have to keep in mind: yes, the Reflash DOES improve the 7AT performance & response (there is a sacrifice in the changed DS mode IMO), but it was done to satisfy the MASSES and keep up , if not improve MPGs !!! Could this reflash truly matched the 5AT performance, probably....but many people didn't like the head jerking instant throttle torque of that car (07 & 08s) - I did . There is less gear hunting, but it's still there. It has to be!! There are more gears 7 vs. 5.

 

The 09s don't qualify for the TSB yet. if your 09s never been reflashed you'll be getting the previous TSB, not the current one. Hopefully I'm wrong, but so far all the 09s have been left out of this "significant improvement" and it's total bull$****!

 

Not trying to **** off anyone here but I have an 09 that has never been reflashed and I'm still not interested in reflashing my car. I don't want the DS setting numbed down. Although I mainly use D or M and I like to use M in the hwy only. I have been driving my car mostly in D for about the last 6 months now to see how quickly it downshift when I need it to downshift.

I have learned and adapted to use this quirky gearbox a long time ago. I have been driving for 32 years and haven only driven an auto gearbox full time for the last 5. To get my car to downshift quickly from D, I press the gas pedal quickly about 1/4 down and as soon as it downshift, I give it more gas if I need more power. This takes about 1 second in my 09 which is still using the stock 09 software.

I actually like this and prefer this to the 2012 loaners I have driven. The 2012 loaners, 3 of them , downshift instantly the minute you give it a little gas. I really don't need my car to downshift all the time if I'm just trying to speed up a little bit. Anyway for those people that want their 09 flashed, hopefully Infiniti will release a TSB soon.