Throttle Response: DE/HR vs VHR

DIGItonium · 10-13-2011, 11:05 AM

Quote:

Originally Posted by oro

:shrug: Doesn't sound too.bad to me. I shut Vdc off everytime i get in the car, being manual with no SRM I shift before redline and know when to downshift. I'd give it a try to have the response my old DE had.

I think it was a slight misunderstanding about disabling ETC versus DBW (i.e., like disconnecting the throttle cables).

Yup... I miss kicking the tail when I tap the throttle in 1st as it quickly revs to 2k RPM. It happened when I test drove my friend's HR.

Maybe that's too touchy of a tip in, but something close would be nice.

oro · 10-13-2011, 02:40 PM

Quote:

Originally Posted by DIGItonium

I think it was a slight misunderstanding about disabling ETC versus DBW (i.e., like disconnecting the throttle cables).

Yup... I miss kicking the tail when I tap the throttle in 1st as it quickly revs to 2k RPM. It happened when I test drove my friend's HR.

Maybe that's too touchy of a tip in, but something close would be nice.

Yeah, that slow ramp wen you put your foot down in 1st really kills that performance feel. Guess I need to get Osiris.

macaddict111 · 05-18-2012, 03:01 PM

Quote:

Originally Posted by DIGItonium

disabling electronic throttle control

*stewie voice* You... You do get the accelerator is just a couple potentiometers... right?

DIGItonium · 05-18-2012, 04:15 PM

Quote:

Originally Posted by macaddict111

*stewie voice* You... You do get the accelerator is just a couple potentiometers... right?

Yea, I know it is. Which is why I wonder about the throttle mapping and control. Disabling ETC is not referring to the accelerator pedal. It refers to the ECU control of the throttles.

370Z Purist · 05-19-2012, 02:28 AM

I went to the sponsors section and some product (hyperrev? something like that) apparently can solve the sluggish throttle because something something about drive by wire changes how the throttle bodies behave since if you floor it blah blah it opens slower blah

I guess safety is a number one thing in general; massive response could make it very easy to break traction even at mild throttle levels of 40-70, especially once you're at the 300 wheel hp mark. Imagine instantaneous or mechanical throttle in a car with 500 wheel; instant slip and smoke.

DIGItonium · 05-19-2012, 03:54 PM

Hence I wonder about torque management. Ever notice starting out in 1st gear at low revs with moderate throttle, and then after 1-1.5k the car accelerates harder? It's an awkward transition making it difficult to drive smoothly at times.

370Z Purist · 05-19-2012, 04:06 PM

Quote:

Originally Posted by DIGItonium

Hence I wonder about torque management. Ever notice starting out in 1st gear at low revs with moderate throttle, and then after 1-1.5k the car accelerates harder? It's an awkward transition making it difficult to drive smoothly at times.

I noticed that in first and second gears. Seems more or less like perhaps the VVEL is adopting a different profile. I normally don't accelerate hard in first until I'm past 2k RPM, but that's just me.

DIGItonium · 05-20-2012, 01:24 AM

Quote:

Originally Posted by 370Z Purist

I noticed that in first and second gears. Seems more or less like perhaps the VVEL is adopting a different profile. I normally don't accelerate hard in first until I'm past 2k RPM, but that's just me.

That's right. I have this habit of getting the car moving at low revs so sometimes it bogs especially when it's pretty warm out.

370Z Purist · 05-20-2012, 06:33 AM

Did a bit more reading; essentially a Cobb AccessPort, it's called HyperTech. I'm sure you've heard of it; a member did something of a review here:

Hypertech Part#62004 Review

It was pretty warm out here yesterday, drove around for the better part of two hours on both the suburban and freeway roads. Definitely felt sluggish once my oil temps hit 230, and refused to drop below 215 even on flat, steady cruises on the freeway at 60mph. It's pretty obvious that heat soak is a serious issue on Z cars. Apparently, the Hypertech does alleviate that flaccidity to some degree.

asdfsammich · 05-20-2012, 02:17 PM

Random reading on the forums has me thinking an UPREV tune would be the easiest way to reduce the "delay" feel in 1st.

Do folks generally agree that on this or have I misinterpreted?

Sent from my iPhone using Tapatalk

DIGItonium · 05-20-2012, 05:27 PM

The UpRev tune has resolved it for other owners. Mine doesn't have this change, so GTM only set it up to support the turbo kit.

asdfsammich · 05-20-2012, 07:11 PM

Ah, ok. It's like the editing of specific table values (for throttle), that could potentially help.

Haha, sorry. I admit my slow and noobish state of mind :/

I got a used 09 MT not too long ago and still trying to figure things out.

But, I fully agree, my 350 MT felt much more responsive (fun) on 1st/2nd when getting on it from the low rpms.

Sent from my iPhone using Tapatalk

05-19-2012, 02:28 AM	#35 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 18	I went to the sponsors section and some product (hyperrev? something like that) apparently can solve the sluggish throttle because something something about drive by wire changes how the throttle bodies behave since if you floor it blah blah it opens slower blah I guess safety is a number one thing in general; massive response could make it very easy to break traction even at mild throttle levels of 40-70, especially once you're at the 300 wheel hp mark. Imagine instantaneous or mechanical throttle in a car with 500 wheel; instant slip and smoke. __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

05-19-2012, 03:54 PM	#36 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Hence I wonder about torque management. Ever notice starting out in 1st gear at low revs with moderate throttle, and then after 1-1.5k the car accelerates harder? It's an awkward transition making it difficult to drive smoothly at times. __________________

05-20-2012, 06:33 AM	#39 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 18	Did a bit more reading; essentially a Cobb AccessPort, it's called HyperTech. I'm sure you've heard of it; a member did something of a review here: Hypertech Part#62004 Review It was pretty warm out here yesterday, drove around for the better part of two hours on both the suburban and freeway roads. Definitely felt sluggish once my oil temps hit 230, and refused to drop below 215 even on flat, steady cruises on the freeway at 60mph. It's pretty obvious that heat soak is a serious issue on Z cars. Apparently, the Hypertech does alleviate that flaccidity to some degree. __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

05-20-2012, 05:27 PM	#41 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	The UpRev tune has resolved it for other owners. Mine doesn't have this change, so GTM only set it up to support the turbo kit. __________________

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05-20-2012, 02:17 PM	#40 (permalink)
asdfsammich Enthusiast Member Join Date: Dec 2011 Location: Southern California Posts: 456 Drives: 09 370Z SR MT Rep Power: 13	Random reading on the forums has me thinking an UPREV tune would be the easiest way to reduce the "delay" feel in 1st. Do folks generally agree that on this or have I misinterpreted? Sent from my iPhone using Tapatalk

05-20-2012, 07:11 PM	#42 (permalink)
asdfsammich Enthusiast Member Join Date: Dec 2011 Location: Southern California Posts: 456 Drives: 09 370Z SR MT Rep Power: 13	Ah, ok. It's like the editing of specific table values (for throttle), that could potentially help. Haha, sorry. I admit my slow and noobish state of mind :/ I got a used 09 MT not too long ago and still trying to figure things out. But, I fully agree, my 350 MT felt much more responsive (fun) on 1st/2nd when getting on it from the low rpms. Sent from my iPhone using Tapatalk