Gas Pedal Delay

elmz · 04-18-2012, 10:40 AM

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!

IcedZ · 04-18-2012, 12:21 PM

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

Quote:

Originally Posted by elmz

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!

elmz · 04-19-2012, 09:59 AM

Quote:

Originally Posted by IcedZ

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

Davey · 04-19-2012, 08:59 PM

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

UNKNOWN_370 · 04-20-2012, 03:18 PM

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.

bushman66 · 06-09-2012, 02:30 PM

Posted this problem in this link:

"Bogging" in first gear

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...

2ndChance · 06-10-2012, 10:36 PM

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

henry0844 · 06-14-2012, 12:34 PM

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.

DIGItonium · 06-15-2012, 01:19 PM

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.

Tribalpinoy91 · 06-15-2012, 01:41 PM

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

cheshirecat · 06-15-2012, 02:37 PM

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.

ZForce · 06-15-2012, 05:20 PM

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.

cheshirecat · 06-15-2012, 06:09 PM

Quote:

Originally Posted by ZForce

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.

that's kinda weird, didn't the revup (exhaust side only) and HR have VVEL?

: /

DIGItonium · 06-15-2012, 09:31 PM

VVEL is not the same as CVTC. VVEL is computer controlled intake valve lift and duration for throttle control instead of the traditional butterfly.

cheshirecat · 06-17-2012, 01:02 PM

Quote:

Originally Posted by DIGItonium

VVEL is not the same as CVTC. VVEL is computer controlled intake valve lift and duration for throttle control instead of the traditional butterfly.

had no clue about that. thanks for explaining

06-14-2012, 12:34 PM	#8 (permalink)
henry0844 Base Member Join Date: Oct 2010 Location: ventura Posts: 167 Drives: 10 370 base sprt pkg Rep Power: 15	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. __________________ 2010 PW 370 base+sport 6mt Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z. Last edited by henry0844; 06-14-2012 at 12:39 PM.

06-15-2012, 01:19 PM	#9 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	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. __________________

06-15-2012, 09:31 PM	#14 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	VVEL is not the same as CVTC. VVEL is computer controlled intake valve lift and duration for throttle control instead of the traditional butterfly. __________________

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04-18-2012, 10:40 AM	#1 (permalink)
elmz Track Member Join Date: Feb 2009 Location: San Diego, CA Posts: 674 Drives: 2014 Porsche Boxster Rep Power: 18	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!

04-19-2012, 08:59 PM	#4 (permalink)
Davey A True Z Fanatic Join Date: Apr 2011 Location: Indiana Posts: 3,766 Drives: '15 NISMO 6MT Rep Power: 117172	I've still never had it happen. It was in the 90s all summer last year. I don't drive slow, either.

04-20-2012, 03:18 PM	#5 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14859	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.

06-09-2012, 02:30 PM	#6 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 16	Posted this problem in this link: "Bogging" in first gear 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...

06-10-2012, 10:36 PM	#7 (permalink)
2ndChance Base Member Join Date: Feb 2011 Location: Panama Posts: 240 Drives: like he stole it Rep Power: 200	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

06-15-2012, 01:41 PM	#10 (permalink)
Tribalpinoy91 Track Member Join Date: May 2012 Location: Las Vegas Posts: 607 Drives: 370z PW Rep Power: 15	Its the drive by wire system.. And the fact that your increasing your gas and engine load enormously. Its going to take some time.

06-15-2012, 02:37 PM	#11 (permalink)
cheshirecat A True Z Fanatic Join Date: Jan 2009 Location: Florida Posts: 1,428 Drives: N54 135i Rep Power: 293	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.

06-15-2012, 05:20 PM	#12 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 22	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.