Welcome to the North American Subaru Impreza Owners Club Friday September 19, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Archives > NASIOC Archives > General Forum Archive

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
 
 
Thread Tools Display Modes
Old 10-18-2000, 06:57 PM   #1
Nemesis
Scooby Newbie
 
Member#: 2465
Join Date: Sep 2000
Post New Impreza with VTD

Just read a post about Outback VTD and whether the New Impreza will get it.

Well I have a Japanese magazine, called "Subaru Impreza: Test Drive Report and Complete Buyser's Guide" (title translated from Japanese), it says that Turbo AT (namely WRX NB with automatic trans.) has VTD system, while MT model (manual) uses "Viscous LSD center diff."
WRX NA uses "Active Torque Split" (translation)...

Well, I may be wrong on the translations.
* Registered users of the site do not see these ads.
Nemesis is offline  
Old 10-18-2000, 07:01 PM   #2
RidinLow
Scooby Guru
 
Member#: 329
Join Date: Sep 1999
Chapter/Region: Tri-State
Location: NJ
Vehicle:
1995 325i
Arctic Gray

Post

Is that the same as VDC?
RidinLow is offline  
Old 10-18-2000, 07:06 PM   #3
ColinL
Scooby Guru
 
Member#: 114
Join Date: Jul 1999
Chapter/Region: MWSOC
Location: Wichita, KS and Whoring, OT
Vehicle:
'03 Evo, Rice White
'01 Erion CBR 929

Post

Yes.
ColinL is offline  
Old 10-18-2000, 07:08 PM   #4
Nemesis
Scooby Newbie
 
Member#: 2465
Join Date: Sep 2000
Post

Not sure, Japanese uses a lot of abbreviations. I don't even know what VTD stands for. Probably, "variable torque differential"?

This is Japanese Spec. We might get different stuff in america.
By the way, in Japan if you get WRX NB 4-speed auto, you get the "speed-shift"(or manu-matic) for sure, any info on what we'll get here?
Nemesis is offline  
Old 10-18-2000, 07:10 PM   #5
Nemesis
Scooby Newbie
 
Member#: 2465
Join Date: Sep 2000
Post

oops, that's "sport-shift" not "speed" :-)
Nemesis is offline  
Old 10-18-2000, 07:14 PM   #6
Nemesis
Scooby Newbie
 
Member#: 2465
Join Date: Sep 2000
Post

Oh, for the safety issue, the front seats get side airbags too.
Nemesis is offline  
Old 10-18-2000, 11:37 PM   #7
Necromancer
Scooby Specialist
 
Member#: 477
Join Date: Oct 1999
Location: Vancouver
Vehicle:
GC4 -> GGA -> GM6
Yeah, that's about right.

Post

VTD is NOT the same as VDC!

VTD is variable torque distribution all wheel drive. Similar to the existing MPT clutch system in U.S. spec automatic tranny Subarus, except I think it has the ability to actually rear-bias the car (rather than simply lock up the center diff). The turbo automatic wagons in Japan have had this for a long time.

VDC is vehicle dynamics control. This is the ABS-like yaw control system employed on the H6 Outback to correct bonehead maneuvers. Given the option, I would probably pass on this feature since it is likely going to try and prevent me from turning the car in properly to a turn. But I haven't driven it yet, so we'll see if that changes.

Cheers,
Joe
Necromancer is offline  
Old 10-19-2000, 05:19 AM   #8
T-WRX
Scooby Specialist
 
Member#: 2468
Join Date: Sep 2000
Chapter/Region: South East
Location: JAX
Vehicle:
08 RS4
05 STi

Post

In AutoWeek's review of the Outback H6, it stated that VDC/VTD will be standard on the New Impreza Turbo.

Here is an explanation:

The Outback H6-3.0 VDC provides unequaled traction and stability using Variable Torque Distribution (VTD) All-Wheel Drive, working in conjunction with the Vehicle Dynamics Control (VDC) system. The VTD and VDC systems operate simultaneously to help maintain traction and stability, and take corrective action before the driver even notices.

The new VTD automatic transmission uses an electronically controlled hydraulic transfer clutch that works with a planetary gear-type center differential to control power distribution between the front and rear wheels. Under most conditions the VTD system splits the power 45 percent front and 55 percent rear. The slight rear-wheel bias enhances the performance driving feel, and the VTD system can vary the power split as needed to respond to road conditions.

Like Active All-Wheel Drive, VTD adjusts the front/rear power split, always helping to ensure that the wheels with the best traction receive the most power.

Vehicle Dynamics Control (VDC) works together with VTD All-Wheel Drive and four-wheel electronic traction control to help maintain directional stability under all driving conditions. The system monitors vehicle stability by continually measuring inputs such as steering angle, yaw rate, lateral g-force and individual wheel speed.

Using that input data, VDC can tell whether the car is going where the driver is steering it. To correct understeer (front-wheel drift), VDC applies split-second brake pressure to the inside rear wheel to help pull the car back on the desired course. To correct oversteer (rear-wheel drift), VDC applies split-second brake pressure to the outside front wheel to bring the rear of the vehicle back in line. Under certain oversteer conditions, VDC can even direct the All-Wheel Drive system to transfer more power to the front wheels. If the situation requires greater intervention, VDC can also direct the engine control module to turn off one or more fuel injectors to reduce power.

The Outback H6-3.0 VDC system adds another layer of driving control -- an all-wheel, all-speed Traction Control System (TCS). Should any wheel spin on a slippery surface, VDC will apply braking force to that wheel to help keep wheel spin under control. Depending on the traction situation, the VDC system can instruct the engine control module to reduce power by turning off one or more fuel injectors. The Outback H6-3.0 VDC can maintain traction even if three wheels are slipping on ice or snow, without the need for a limited-slip differential.
T-WRX is offline  
Old 10-19-2000, 06:05 AM   #9
WRC666
Scooby Newbie
 
Member#: 2351
Join Date: Sep 2000
Unhappy

Out of the sudden an overly tailhappy old 911 comes to the mind of true drivers.
Cars tend to become less driver oriented(for most moron drivers a good thing),
but also very boring to drive. My old 280Z was a blast to powerslide through a turn.
Lets keep in mind, thats fun driving.
Too much control for me in those new cars.
666
WRC666 is offline  
Old 10-19-2000, 08:26 AM   #10
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT

Post

IF the new US/Can Impreza gets VTD and VDC, a VDC off button would be great for more "spirited" driving. But in the litigious(sp?) U.S. - I don't know.
Dennis
bluesubie is offline  
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Brand new Impreza with rusted exaust?? nyrican Newbies & FAQs 12 07-27-2009 07:28 PM
which Forester XTs have VDC with VTD? bWRX Transmission (AT/MT) & Driveline 1 03-05-2009 11:34 AM
new here small problem with new impreza aduke Normally Aspirated Powertrain 10 08-31-2006 09:06 AM
my impreza with new pic [freeman] Member's Car Gallery 25 05-28-2001 07:19 PM
my impreza with new pic JC Interior & Exterior Modification 7 05-22-2001 12:53 AM


All times are GMT -4. The time now is 02:45 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.