That's the reason I got rid of mine. It was a major safety concern. Scared the hell out of me twice.

I got a 2011 Juke, and I thought that alleviated my problem; but I feel like it does something similar sometimes. It's an automatic though, so it feels different. And it's a small turbo engine.

Interesting enough, a buddy was selling his sprint booster from his already sold 370z. So I inquired into it and letting him hook it into my car so I can try, and WOW what a difference. I definently thought this thing was a scam, but its working great so far. I guess my issue though is that this seems to be like a bandaid on the problem. Im still very anxious to know if an osiris tuner can fix this issue 100%. Im willing to pay for the tune JUST to fix this issue with my car if the tuner can guarentee 100% it can be done. I just want it fixed otherwise im gonna haveto sell the Z. I cant be worried about driving around town and dying at traffic lights.

I haven't had this happen to me in quite a while, but it's definitely a shocking experience when it happens the first couple of times. Just don't throw it into 2nd too early or be in 2nd when turning onto a main street(e.g. exiting a gas station or mini mall) because it's going to lag. I never engage 2nd until I'm well passed 3k. And FYI I've been shifting at 4k and my average mpg went form 21 to 22.7 =) so that's another plus!

Wait another month when it starts getting warmer. You'll get it back.

I've had the car since it came out and I've always hovered around 21mpg. Nothing has changed, same route to work and home and same daily usage. And it wasn't until recently I decided to drive the car a little harder because I've babied it for so many years. And surprisingly, the car gets better mpg shifting at 4k :icon17:

I've still never had it happen. It was in the 90s all summer last year. I don't drive slow, either. :confused:

Never happens in manual mode, but auto mode is another story. And it gets worse in extreme temps. Hot or cold. I drive 90% in manual mode so it doesn't bother much. But I might get sprint booster for days I need to be in auto mode.

Posted this problem in this link:

http://www.the370z.com/engine-drivet...irst-gear.html

I can't believe that NONE of the tuners have figured this out yet. My 2001 Porsche Twin Turbo has drive by wire, and I don't get any of this ridiculous lag...

I've experienced this issue a few times.. feels really awkward, but only happens in auto mode. I hope It gets fixed with the tune.

Normally happens when you step the gas right after it has shift to 4th or 5th gear

Reported

in the "bogging in 1st gear" thread, a poster mentioned the the etc can be turned off at the expense of losing your cruise control. he stated that when etc is turned off the ecu will keep a one to one relationship between the throttle position and the throttle plate. anyone tried this, if so was the throttle way too touchy as stated in the other thread? I was thinking of try to get a tuner to make a non etc map to try it out.

edit: non etc meaning the the ecu will not try to close the throttle to limit torque. seems like this system is programmed to be way too intrusive from the factory.

IIRC, member "wstar" did this. IIRC, it disables S-Mode throttle blipping and VDC as well.

But yea, there has to be some sort of aggressive torque management going on. I read about Camaro owners having the same problem.

Its the drive by wire system.. And the fact that your increasing your gas and engine load enormously. Its going to take some time.

The 350z is also drive by wire and doesn't have this issue. It goes beyond the system. It's also obvious that it's temp related.

Last report I got from UpRev is that they still have not cracked this issue with the ECU. It has to do with the variable valve xxxx and that is the difference between the 350Z and 370Z.