Are my new stiffer sways screwing with VDC?

Mt Tam I am · 01-02-2011, 10:51 AM

I recently installed Hotchkis sways *. I was coming out of a turn, gave it some (not WOT) gas and the rear end tried to slide out. I lessened the throttle and corrected, I could see the VDC light flash on the dash. No big deal. My first thought was I had turned off VDC only to realize it was on, I had forgotten to turn it off, like usual.

I thought the VDC would not allow you to break loose like this (giving it too much throttle) while in a turn. It has cut my throttle before I could break loose. Are my new stiffer sways screwing with VDC?

I realize whatever happens it is my fault. I am driving. I just thought the training wheels that are the VDC, would have deployed.

* middle hole on rears.

Junior370z · 01-02-2011, 10:56 AM

Maybe you didn't give it time too? How fast did you let off the pedal when you started to slide? I have the Stillen sways set to the stiffest in the rear and my vdc comes on still.

AllForTheCash · 01-02-2011, 10:58 AM

Happens to me as well. I can get the rear to slide and correct it myself WITH the VDC on. Infact sometimes I can get it slide and back in line without the VDC having to do anything (With it on). You're fine.

SPOHN · 01-02-2011, 11:16 AM

My G37 did the same thing but it wasnt to bad at all when it would slide out. It seems the car will slide some before the VDC can truely active. Somewhat like cause and effect. I really dislike VDC and choose not to have it. But it can serve a purpose to some.

shadow2k · 01-02-2011, 11:26 AM

You can still lose traction with VDC on. It is not a miracle button. It is there to correct minor mistakes, but can still be pushed past its limits.

Jordo! · 01-02-2011, 11:27 AM

Yep -- you can kick out the rear with the VDC on and it will correct itself.

Stiffer rear sways will definitely make it easier to oversteer.

m4a1mustang · 01-02-2011, 11:53 AM

You increase oversteer with a larger rear bar. The sways aren't messing with VDC. You changed the dynamics of the car so it's going to swing the rear out a lot easier now.

ChrisSlicks · 01-02-2011, 01:07 PM

Quote:

Originally Posted by m4a1mustang

You increase oversteer with a larger rear bar. The sways aren't messing with VDC. You changed the dynamics of the car so it's going to swing the rear out a lot easier now.

You can always step the rear down to the softest setting.

ClemsonWill · 01-02-2011, 01:32 PM

My VDC light comes on all the time without any noticeable change in throttle response. I think you are good. My sway bars will be on in a few weeks so I will let you know if I notice any major change.

kenchan · 01-02-2011, 01:32 PM

You change one thing on the car it will affect the others.

Mt Tam I am · 01-02-2011, 03:11 PM

Thanks. Overall I am very happy with the settings. I just needed to get used to them. VDC is not my thing anyway.
Monday I hope to get those coil overs installed.

AllForTheCash · 01-02-2011, 04:12 PM

Quote:

Originally Posted by shadow2k

You can still lose traction with VDC on. It is not a miracle button. It is there to correct minor mistakes, but can still be pushed past its limits.

yes this is the extreme, but we are talking small controlled slips not a full take off

ProfessorDave · 01-02-2011, 04:23 PM

Does the ECU "learn" suspension mods? Just wondering.

I agree with the advice to drop to the first setting on the bar. I've always found the softest setting on an aftermarket bar to be a HUGE difference over stock.

SkyZ · 01-02-2011, 04:39 PM

i'd also add that vdc takes time to act, if it sense a slip it will try to prevent it this is for small slides, but for big ones it will try and try but it wont just fix everything in an instant. i mean give it time and eventually it'll save you.

Jordo! · 01-02-2011, 11:44 PM

Quote:

Originally Posted by ProfessorDave

Does the ECU "learn" suspension mods? Just wondering.

I agree with the advice to drop to the first setting on the bar. I've always found the softest setting on an aftermarket bar to be a HUGE difference over stock.

I doubt it. VDC probably just responds to wheelspin as it happens.

01-02-2011, 10:51 AM	#1 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3843	Are my new stiffer sways screwing with VDC? I recently installed Hotchkis sways . I was coming out of a turn, gave it some (not WOT) gas and the rear end tried to slide out. I lessened the throttle and corrected, I could see the VDC light flash on the dash. No big deal. My first thought was I had turned off VDC only to realize it was on, I had forgotten to turn it off, like usual. I thought the VDC would not allow you to break loose like this (giving it too much throttle) while in a turn. It has cut my throttle before I could break loose. Are my new stiffer sways screwing with VDC?* I realize whatever happens it is my fault. I am driving. I just thought the training wheels that are the VDC, would have deployed. * middle hole on rears. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

01-02-2011, 10:56 AM	#2 (permalink)
Junior370z A True Z Fanatic Join Date: Apr 2009 Location: Las Vegas Age: 50 Posts: 1,024 Drives: over the speed limit Rep Power: 293	Maybe you didn't give it time too? How fast did you let off the pedal when you started to slide? I have the Stillen sways set to the stiffest in the rear and my vdc comes on still. __________________ DON'T DO IT! ( Click to show/hide ) Stillen CBECAI-U/D PulleyGround KitSwaysSetrab Oil CoolerIchiba Rear Camber KitAgility CoiloverBerk HFCTechnosquare TuneGT-R ButtonVenaci MeshSP Performance Cross Drilled/Slotted RotorsSPC Toe BoltsBomex LipMud flapsAero Jacket Type III WingSold

01-02-2011, 10:58 AM	#3 (permalink)
AllForTheCash Enthusiast Member Join Date: Sep 2010 Location: NJ Posts: 385 Drives: 370z Rep Power: 15	Happens to me as well. I can get the rear to slide and correct it myself WITH the VDC on. Infact sometimes I can get it slide and back in line without the VDC having to do anything (With it on). You're fine. __________________ 2010 370z Brilliant Silver/Frost - Touring - Sport - Navigation - 6MT Last edited by AllForTheCash; 01-02-2011 at 04:13 PM.

01-02-2011, 11:27 AM	#6 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Yep -- you can kick out the rear with the VDC on and it will correct itself. Stiffer rear sways will definitely make it easier to oversteer. __________________ Enjoy it. Destroy it.

01-02-2011, 11:53 AM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	You increase oversteer with a larger rear bar. The sways aren't messing with VDC. You changed the dynamics of the car so it's going to swing the rear out a lot easier now. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

01-02-2011, 11:16 AM	#4 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	My G37 did the same thing but it wasnt to bad at all when it would slide out. It seems the car will slide some before the VDC can truely active. Somewhat like cause and effect. I really dislike VDC and choose not to have it. But it can serve a purpose to some.

01-02-2011, 11:26 AM	#5 (permalink)
shadow2k Base Member Join Date: Jul 2009 Location: Overland Park, Kansas Posts: 143 Drives: 09 PG 370z 6MT Rep Power: 16	You can still lose traction with VDC on. It is not a miracle button. It is there to correct minor mistakes, but can still be pushed past its limits.

01-02-2011, 01:32 PM	#9 (permalink)
ClemsonWill A True Z Fanatic Join Date: Jul 2010 Location: Charleston, SC Posts: 12,045 Drives: a Civic VP! Rep Power: 445	My VDC light comes on all the time without any noticeable change in throttle response. I think you are good. My sway bars will be on in a few weeks so I will let you know if I notice any major change. __________________ Slightly modded

01-02-2011, 01:32 PM	#10 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	You change one thing on the car it will affect the others.

01-02-2011, 03:11 PM	#11 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3843	Thanks. Overall I am very happy with the settings. I just needed to get used to them. VDC is not my thing anyway. Monday I hope to get those coil overs installed. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

01-02-2011, 04:23 PM	#13 (permalink)
ProfessorDave A True Z Fanatic Join Date: Jul 2010 Location: Scranton, PA Posts: 1,580 Drives: In the fairway Rep Power: 19	Does the ECU "learn" suspension mods? Just wondering. I agree with the advice to drop to the first setting on the bar. I've always found the softest setting on an aftermarket bar to be a HUGE difference over stock. __________________ Rain, snow, sleet, hail: 2009 Mazda 3 sGT HB Everything else: 2009 370z, PW Touring 6MT

01-02-2011, 04:39 PM	#14 (permalink)
SkyZ Enthusiast Member Join Date: Jul 2009 Location: Canada Posts: 382 Drives: 09 370z PG M6 Rep Power: 16	i'd also add that vdc takes time to act, if it sense a slip it will try to prevent it this is for small slides, but for big ones it will try and try but it wont just fix everything in an instant. i mean give it time and eventually it'll save you.

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