I'm still trying - here's my continuing dialogue with Infiniti:

Thank you for your reply. However, I think the dealer might not be quite right about this. Please see below:

From Popular Mechanics September 2007:

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"We like the ample power and reasonable fuel economy too, although it does have a minimum preference for midgrade fuel. But it’s difficult to be smooth around town with the Infiniti. The engine’s throttle tip-in off idle is pretty abrupt. It’s not a problem on the open road, but in stop-and-go driving with just a touch of throttle, we’re spilling our morning Starbucks. Trying to grandma off the line just creates a lot of cutting-in-front and merciless honking. Sheesh.

So, we called Infiniti, which resulted in a senior powertrain engineer coming by to demonstrate a 2008-spec G35. The company had identified the same issue, and revised the engine-tuning parameters appropriately. It’s a big improvement."
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Apparently "the company had identified the same issue, and revised the engine tuning parameters appropriately." Are you saying that Popular Mechanics is mistaken?

I and many other owners of the G35 (check out g35driver.com) find the tip-in to be the worst part of an otherwise excellent vehicle. I would like the 2008 software installed in my vehicle, and I believe that you should consider having a TSB for this issue for all drivers.

Can Infiniti of Ardmore flash the 2008 software onto my 2007 G35x? Will they do this for free?

Thanks!

____________________

-----Original Message-----
Sent: 10/8/2007 11:04 AM
Subject: Re: I have a technical question about my vehicle

Dear __,

Thank you for taking the time to personally contact us about your 2007 Infiniti G35x.

According to Infiniti of Ardmore, reflashing your ECU/ECM on your 2007 Infiniti G35x to the 2008 settings will not have any changes to the throttle tip's abrupt tuning. You may contact Infiniti of Ardmore for more detailed information on this topic. The number to Infiniti of Ardmore is 610-649-3600.

We hope that this information answers your question, but if you need any additional information or have further questions, please let us know by reply e-mail or by calling 1-800-293-0800 and pressing "0" for a live operator.

Sincerely,

Infiniti
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Dear Infiniti:

You made no attempt to answer my questions. This is my second Infiniti. I would think that you would at least attempt to answer my questions rather than pushing me off to the dealer. I expect better customer service than this.

Sincerely,

 

Thanks for posting your conversations with infiniti stinky.. keep us posted on any updates

 

I'm creating a seperate thread about it, but to summarize.

When starting from a stop, I get a hesitation/thud at 1100 rpms.

I get a similar (but worse) hesitation then thud when cruising at 40 mph.

 

You are referring to an actual problem, whereas the OP was referring to an "improvement" via an ECU reprogram.

 

Shouldn't be the case, even with the ICC disengaged I still get surging with normal cruise control. I would go in and as for a re-flash anway. Whats the worst they could say..? no?

 

Believe what you like, but the TSB fix for the cruise control is a throttle map reflash. They reprogram the ECM with updated curves.

I posted in this thread (mistakenly thinking that I was doing the community a favor) because this thread is discussing the issue of violent throttle tip-in off idle, as described by Popular Mechanics magazine. What I was reporting was that the new throttle maps released by Infiniti greatly reduced the violence of the throttle tip-in off idle.

Seeing as how car companies don't go out of their way to create multiple ECM programs for the exact same vehicle, I assumed that most would understand the connection I was trying to make between the two subjects. (We all know that companies release software updates, but they are revisions to previous versions; don't take this statement and run with it, dopey.)

Next time I'll remember to use smaller words for those who are trolling the boards trying to find fault in every post, instead of using it for gleaning of good information.

 

Nobody's disagreeing with anyone here, I think everyone's just trying to get on the same page. Yes, firmware could be the same between the 2008 and the 2007 update, but Infiniti will NOT treat them the same.

Another words, go to a dealership and ask for:

2007 surging while on cruise control - should get the update
2008 reflash for the 2007 - probably not going to happen

"Shouldn't be the case, even with the ICC disengaged I still get surging with normal cruise control. I would go in and as for a re-flash anway. Whats the worst they could say..? no?"

This is true, but the TSB specifically states "WITHOUT" ICC. My car has the ICC and it exhibits this behavior, and as an extra, wouldn't mind getting the other annoyance taken care of as stated by the previous poster.

My dealership will not perform this TSB on my car as it currently stands, I haven't pushed it until I can get more info, which currently happens to be this thread.

 

Yeah, they are separate issues.

I'm just trying to find out if there's an available reflash they can do while I have the car in for the tranny issue.

 

I brought my car into the dealer today for this issue and my tranny issue.

I got to testdrive a 2008 to show the differences between my car and what it "should be."

There's a noticeable difference between my 2007 and the 2008 in terms of throttle input. The 2008 was noticeably smoother from a stop and during shifts and cruising. The dealer is going to do the "surging cruise control" reflash, they also said they'd look for any more updates to update my car to the 2008 ECM standard.

I'll keep you posted.

 

^^please do.. i'm getting the itch to go to my dealer and try out one of the 08's to see if i notice a difference

 

yea i took mine in for an oil change when this was first posted and also asked for the cruise control fix. my service dept at southbay infiniti is cool so they updated the computer to the 08' specs and fixed the cruise control thing. it takes off a bit smoother now and theres not as much thud in the tranny.

 

g u l8er,

I apologize in advance for being a hyper-specific detail weenie, but are you sure that they loaded the 2008 software or did they do something else? I am going to talk to my dealer today about having the 2008 software loaded, and if I have an example of a dealer who already did this, that would be helpful.

Thanks!
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Also, tranny thud can be a GOOD thing; it can signify faster shifts which are actually better for the longevity of the transmission. I know that may seem weird that snapping into the next gear minimizes tranny wear, but it's true. I'm just looking for a throttle fix; if anything, I'd rather my tranny snapped a bit harder from gear to gear.
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Oops, I just saw your other thread on exactly what the "thud" is. I'm going to have to check out my car and see if it does that too.

 

Yesterday, I took my 2007 G35x to Pinnacle Nissan (AND Infiniti, for those pedants to whom such minutiae matters) for a key replacement and oil change. The service guy shrugged and looked at me as though I was from a different planet when I mentioned the possibility of doing anything about the throttle calibration to 2008 specifications, in my vehicle.

If anyone from the Phoenix area gets hooked-up with a 2008 spec reflash (if it has been established that this is possible) please post.

Many thanks

 

I just dropped my car off at the dealer to have the update done on the TSB (cruise control / throttle surging downhill). I too have some quirky tranny issues that the tech said may also be remedied with the ECU flash. They are doing both updates today - so I will keep you all posted how the car handles once I have it back.

 

I took my car in today for it's second oil change and the fob swap. I explained to the senior service rep the problem with sensitive throttle and that it was supposally fixed on '08 model. I asked if they could re-flash the '07 ECU with '08 ECU firmware. He put it on my service order and said the tech would look into it.

When I picked up my, he explained that the '08 firmware was incompatible with '07 ECU. He said my options are to buy a '08 ECU ~$1k or wait till Nissan upgrades the ECU firmware and re-maps the throttle. I told him I would wait because it's not that big of a deal. I wonder if these guys are just blowing smoke up a$$ and didn't want to mess with it.

Has anyone had the '07 ECU re-flashed with '08 firmware?