Gas Pedal Delay

Mandingo · 12-14-2010, 06:08 PM

Would love to hear what happened, IcedZ!

IcedZ · 12-15-2010, 08:35 AM

Sorry about that! Sometimes I just need a reminder...
Not much happened really. The guy came and drove my car for a while with me there. He brought Consult-II with him. He was not able to find anything "quantitatively" wrong, but he agreed there was something not exactly right. His initial reaction is that it is an ECU issue. Nothing came out of this visit. He said he will come back in January with some more equipment. He was very easy to work with and friendly. He gave me his cell phone #.
Hopefully more to come in January some time!
That being said, I highly recommend complaining about this and getting a special tech on your case. These techs are regional and they travel to different dealerships in regions to solve weird problems.

Mike's 370z · 12-20-2010, 08:36 AM

I have followed this thread for a while now, and the more I read I think it is a purposed design. I think that maybe in the same vein that Nissan wanted better MPG and henceforth did not include front brake ducts that would have decreased mileage due to drag, perhaps Nissan mapped the throttle in such a manner that if not fully depressed at launched at a high RPM, the car sips fuel below 3000 RPM. Further that with the torque curves seen in just about every dyno map done on a stock 370z, with a huge dip between 2500 and 3000 RPM, and the hesitation makes perfect sense - not that it does not suck.
It is ironic that a simple fix such as the gadget that increases voltage to the gas peddle is all that is needed to overcome some of the hesitation, but the inherent design of the engine and mappings make it fairly difficult (or at least some serious investments) to overcome.

Car and Driver Investigates Brake issue
Z Meets Wall: We Investigate Why the NISMO Z's Brakes Failed at Lightning Lap - Feature - Auto Reviews - Car and Driver

IcedZ · 12-21-2010, 01:58 PM

Quote:

Originally Posted by Mike's 370z

I have followed this thread for a while now, and the more I read I think it is a purposed design. I think that maybe in the same vein that Nissan wanted better MPG and henceforth did not include front brake ducts that would have decreased mileage due to drag, perhaps Nissan mapped the throttle in such a manner that if not fully depressed at launched at a high RPM, the car sips fuel below 3000 RPM. Further that with the torque curves seen in just about every dyno map done on a stock 370z, with a huge dip between 2500 and 3000 RPM, and the hesitation makes perfect sense - not that it does not suck.
It is ironic that a simple fix such as the gadget that increases voltage to the gas peddle is all that is needed to overcome some of the hesitation, but the inherent design of the engine and mappings make it fairly difficult (or at least some serious investments) to overcome.

Car and Driver Investigates Brake issue
Z Meets Wall: We Investigate Why the NISMO Z's Brakes Failed at Lightning Lap - Feature - Auto Reviews - Car and Driver

Agreed, there is an inherent lack of response... but again, there is a change in the car. It gets REALLY bad after some period of driving. I find that in-city driving make it much worse. I lose SO MUCH power that I feel like I will stall if I release below 1500RPM. But not all the time.

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12-14-2010, 06:08 PM	#1 (permalink)
Mandingo Track Member Join Date: Nov 2010 Location: Dallas Posts: 625 Drives: '10 370z 6spd Rep Power: 3370	Would love to hear what happened, IcedZ!

12-15-2010, 08:35 AM	#2 (permalink)
IcedZ Base Member Join Date: Feb 2009 Location: Gainesville, FL Posts: 194 Drives: 09 370 Yellow, 6MT Rep Power: 16	Sorry about that! Sometimes I just need a reminder... Not much happened really. The guy came and drove my car for a while with me there. He brought Consult-II with him. He was not able to find anything "quantitatively" wrong, but he agreed there was something not exactly right. His initial reaction is that it is an ECU issue. Nothing came out of this visit. He said he will come back in January with some more equipment. He was very easy to work with and friendly. He gave me his cell phone #. Hopefully more to come in January some time! That being said, I highly recommend complaining about this and getting a special tech on your case. These techs are regional and they travel to different dealerships in regions to solve weird problems.

12-20-2010, 08:36 AM	#3 (permalink)
Mike's 370z Base Member Join Date: May 2010 Location: South Riding, VA Posts: 15 Drives: 09 370z BLK TRG SPT Rep Power: 15	I have followed this thread for a while now, and the more I read I think it is a purposed design. I think that maybe in the same vein that Nissan wanted better MPG and henceforth did not include front brake ducts that would have decreased mileage due to drag, perhaps Nissan mapped the throttle in such a manner that if not fully depressed at launched at a high RPM, the car sips fuel below 3000 RPM. Further that with the torque curves seen in just about every dyno map done on a stock 370z, with a huge dip between 2500 and 3000 RPM, and the hesitation makes perfect sense - not that it does not suck. It is ironic that a simple fix such as the gadget that increases voltage to the gas peddle is all that is needed to overcome some of the hesitation, but the inherent design of the engine and mappings make it fairly difficult (or at least some serious investments) to overcome. Car and Driver Investigates Brake issue Z Meets Wall: We Investigate Why the NISMO Z's Brakes Failed at Lightning Lap - Feature - Auto Reviews - Car and Driver