VVEL control unlocked

Sh0velMan · 10-31-2012, 09:12 AM

Quote:

Originally Posted by Spikuh

It sounded like there was a way to make the electronic throttle behave like a cable throttle, but in doing so you lose the SynchroRev feature.

Disable ECT in your ROM.

I have not had ECT enabled for months, don't miss SRM at all.

The response isn't quite as good as a cable, but it's a damn sight better than stock.

Edit: You also lose cruise control and VDC can no longer close the throttle on you, so it's more like a traditional stability control (brakes only).

Nissanboy · 10-31-2012, 07:07 PM

Quote:

Originally Posted by Sh0velMan

Disable ECT in your ROM.

I have not had ECT enabled for months, don't miss SRM at all.

The response isn't quite as good as a cable, but it's a damn sight better than stock.

Edit: You also lose cruise control and VDC can no longer close the throttle on you, so it's more like a traditional stability control (brakes only).

Engine Coolant Temp?

SS_Firehawk · 10-30-2012, 10:13 AM

It might use the throttle map to rev match accurately. I didn't know SRM was so deep in the vehicle. It could be why it took so long for any one manufacturer to bring it to market. Even now, I think BMW may be the only other one that has it on one of their models.

Spikuh · 10-30-2012, 10:51 AM

Quote:

Originally Posted by SS_Firehawk

It might use the throttle map to rev match accurately. I didn't know SRM was so deep in the vehicle. It could be why it took so long for any one manufacturer to bring it to market. Even now, I think BMW may be the only other one that has it on one of their models.

Honestly, I couldn't even begin to speculate on it. I just know that if you swap gears it is thrown off.

b1adesofcha0s · 10-30-2012, 01:59 PM

Quote:

Originally Posted by SS_Firehawk

It might use the throttle map to rev match accurately. I didn't know SRM was so deep in the vehicle. It could be why it took so long for any one manufacturer to bring it to market. Even now, I think BMW may be the only other one that has it on one of their models.

I think the new 911 has it too, but you can't turn it off like you can in the Z.

roplusbee · 10-31-2012, 05:38 PM

I haven't had much time to hang out on the forums lately, but UPREV is experimenting with VVEL control. Disabling DTC does net a more "normal" throttle response at the cost of SRM, Cruise Control, and VDC. This is not really necessary, because throttle response (and torque management that causes VDC to be overly invasive) can also be tuned or adjusted. Before anyone goes off the deep end, have a chat with the experts and/or developers. My 2 cents.

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Sh0velMan · 10-31-2012, 08:09 PM

Quote:

Originally Posted by Nissanboy

Engine Coolant Temp?

Sorry lmao.

ETC. Electronic Throttle Control. It's a toggle in Osiris.

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Jordo! · 11-01-2012, 06:58 PM

FYI...

NA: 342/275. Anyone higher?

I'm fairly certain a good chunk of those gains up top are from increased lift, and not just from the headers.

Mike · 11-01-2012, 07:01 PM

Quote:

Originally Posted by Jordo!

FYI...

hp numbers with uprev tune

I'm fairly certain a good chunk of those gains up top are from increased lift, and not just from the headers.

he doesn't have headers, does he? Looked like intake, test pipes and cbe only

Jordo! · 11-01-2012, 07:09 PM

Quote:

Originally Posted by Mike

he doesn't have headers, does he? Looked like intake, test pipes and cbe only

Whoops -- I actually meant to link your thread -- D'OH

Mike · 11-01-2012, 07:10 PM

Quote:

Originally Posted by Jordo!

Whoops -- I actually meant to link your thread -- D'OH

Looks like I gained 25 with headers, 12 with tune, and I was already tuned before it.

Sh0velMan · 11-01-2012, 08:06 PM

Quote:

Originally Posted by Mike

Looks like I gained 25 with headers, 12 with tune, and I was already tuned before it.

Any details on the exhaust you're running? I'm fairly sure that's what's keeping me out of the 340+ club.

Jordo! · 11-01-2012, 09:54 PM

Quote:

Originally Posted by Mike

Looks like I gained 25 with headers, 12 with tune, and I was already tuned before it.

Although VVEL tuning has to match fuel and ignition tuning, I can pretty much guarantee you that's all due to being able to tweak VVEL.

I'm definitely going to PM John -- I want more details. Headers are going on my car this month

Sh0velMan · 11-02-2012, 07:05 AM

I gotta tell you, unless they've made huge strides with VVEL since May, it's pretty unlikely they got double digit gains from VVEL tuning alone.

Sent from my SAMSUNG-SGH-I717 using Tapatalk 2

Jordo! · 11-03-2012, 01:59 PM

Quote:

Originally Posted by Sh0velMan

I gotta tell you, unless they've made huge strides with VVEL since May, it's pretty unlikely they got double digit gains from VVEL tuning alone.

Sent from my SAMSUNG-SGH-I717 using Tapatalk 2

No -- of course not. That's not what I'm saying.

To be clear, you can't tune valve timing and lift without also tuning fuel and spark -- it all works together. But my point is that optimized tuning without being able to adjust VVEL would have resulted in lower numbers than with the ability to also tune VVEL.

My guess is, being able to tune all three netted another 10-15 whp above tuning fuel and spark alone.

If Mike had fuel and spark only tuned with the headers previously and went from about 330 to 342 with a re-tune that included VVEL changes, that is right on the money with my predictions.

10-30-2012, 10:13 AM	#3 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	It might use the throttle map to rev match accurately. I didn't know SRM was so deep in the vehicle. It could be why it took so long for any one manufacturer to bring it to market. Even now, I think BMW may be the only other one that has it on one of their models. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

10-31-2012, 05:38 PM	#6 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	I haven't had much time to hang out on the forums lately, but UPREV is experimenting with VVEL control. Disabling DTC does net a more "normal" throttle response at the cost of SRM, Cruise Control, and VDC. This is not really necessary, because throttle response (and torque management that causes VDC to be overly invasive) can also be tuned or adjusted. Before anyone goes off the deep end, have a chat with the experts and/or developers. My 2 cents. Sent from my LG-V909 using Tapatalk 2 __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

11-01-2012, 06:58 PM	#8 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	FYI... NA: 342/275. Anyone higher? I'm fairly certain a good chunk of those gains up top are from increased lift, and not just from the headers. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 11-01-2012 at 07:09 PM.

11-02-2012, 07:05 AM	#14 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 21	I gotta tell you, unless they've made huge strides with VVEL since May, it's pretty unlikely they got double digit gains from VVEL tuning alone. Sent from my SAMSUNG-SGH-I717 using Tapatalk 2 __________________ Buy My Car! \| Build Thread

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