Notices
Evo General Discuss any generalized technical Evo related topics that may not fit into the other forums. Please do not post tech and rumor threads here.
Sponsored by: RavSpec - JDM Wheels Central

Dive by wire?

Thread Tools
 
Search this Thread
 
Old Jan 10, 2003 | 09:28 AM
  #1  
djdaizzy's Avatar
Thread Starter
Evolving Member
 
Joined: Nov 2001
Posts: 172
Likes: 0
Question Drive by wire?

Does anyone know if the US EVO VIII is using drive by wire(electronic throttle)?

Last edited by djdaizzy; Jan 10, 2003 at 10:12 AM.
Reply
Old Jan 10, 2003 | 04:57 PM
  #2  
2GTSiAWD's Avatar
Evolving Member
 
Joined: Dec 2002
Posts: 119
Likes: 0
From: King of Prussia, PA
I highly doubt it..
Reply
Old Jan 10, 2003 | 05:27 PM
  #3  
BurnOutz's Avatar
Evolving Member
 
Joined: Sep 2002
Posts: 203
Likes: 0
From: Herktown, Cali
Whats the benefits of this system anyways. From what it sounds like, it seems as though there will be less feeling of the throttle.
Reply
Old Jan 10, 2003 | 05:27 PM
  #4  
Guack007's Avatar
Evolved Member
 
Joined: May 2002
Posts: 1,290
Likes: 0
From: CA
I hope they dont change it to some ****ty electronic throttle.
Reply
Old Jan 10, 2003 | 07:23 PM
  #5  
chronohunter's Avatar
EvoM Guru
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,767
Likes: 0
From: Boulder, Co.
I hope it dosen't have it. Those systems are usually done for emissions reasons and usually hurt throttle response especially when you lift of the gas (to get the car to tighten its line in hard cornering). They make the engine feel slugish and unresponsive (usually)
Reply
Old Jan 10, 2003 | 10:55 PM
  #6  
hornet's Avatar
Evolving Member
 
Joined: Dec 2002
Posts: 180
Likes: 0
From: Northern VA
I test drove a Nissan Altima 3.5 SE and they have electronic throttle, from my experience with that car it seemed pretty responsive (although it was only a test drive and can't account for a lot of other variables).
Reply
Old Jan 11, 2003 | 01:20 AM
  #7  
RaX's Avatar
RaX
Evolved Member
 
Joined: Aug 2001
Posts: 1,451
Likes: 0
From: Earth
The new USDM STi has electronic throttle (drive by wire).
I don't know what that means from a tuning standpoint though...
Reply
Old Jan 11, 2003 | 01:20 PM
  #8  
Guack007's Avatar
Evolved Member
 
Joined: May 2002
Posts: 1,290
Likes: 0
From: CA
I drove the 3.5L maxima and every time you take your foot off the gas to shift the rpms keep going for about 300 more revs than when you took your foot off so the chip can send the signal to the throtttle to close. It takes extra time thats not needed. Yes it does feel a hell of alot slower than it should be to respond. However when it does respond it is very fast and very powerfull, (for its class). Some companys like to use the electronic throttle to vary how much the throttle opens reletaive to pedel movement. I personnally like to move my foot more to get more power. Another flaw in the nissan (even the 350Z) elect. throttle is that it cuts power to 25% maximum at "WOT" if the brake and gas are applied at the same time. Thus no left foot braking . Ive given several resons to not use electronic throttle, anyone have a reason for it?

PS this is my 350th post, when do I become Evolved?
Reply
Old Jan 11, 2003 | 10:04 PM
  #9  
ACM's Avatar
ACM
Evolving Member
 
Joined: Jan 2003
Posts: 102
Likes: 0
From: Massachusetts
Originally posted by Guack007
I drove the 3.5L maxima and every time you take your foot off the gas to shift the rpms keep going for about 300 more revs than when you took your foot off so the chip can send the signal to the throtttle to close. It takes extra time thats not needed. Yes it does feel a hell of alot slower than it should be to respond. However when it does respond it is very fast and very powerfull, (for its class). Some companys like to use the electronic throttle to vary how much the throttle opens reletaive to pedel movement. I personnally like to move my foot more to get more power. Another flaw in the nissan (even the 350Z) elect. throttle is that it cuts power to 25% maximum at "WOT" if the brake and gas are applied at the same time. Thus no left foot braking . Ive given several resons to not use electronic throttle, anyone have a reason for it?

PS this is my 350th post, when do I become Evolved?
I had a Mazda some years ago that would hold the throttle open (via the ISC) for a count of 3 after I got out of the throttle. Buried me in snowbanks about a dozen times the first winter after I bought it. I *****ed and whined at the dealer and the area rep, all I got was 'it's not a race car, why are you driving it like that'. I sold it with 15k on it. It doesn't take d-b-w to screw things up...Just thoughtless engineers.

Charles
Reply
Old Jan 14, 2003 | 03:23 PM
  #10  
Guack007's Avatar
Evolved Member
 
Joined: May 2002
Posts: 1,290
Likes: 0
From: CA
good point.
Reply
Old Jan 14, 2003 | 03:33 PM
  #11  
iodine23's Avatar
Evolved Member
iTrader: (1)
 
Joined: Oct 2001
Posts: 776
Likes: 0
From: Austin, TX
Some cars with electronic throttle simply use throttle pedal position as an indication of how fast you want to go. That is to say that throttle plate position is not directly related to pedal position. Other cars provide a 1:1 linear mapping, I think the Z does as mentioned above. But as was also said, it cuts throttle to 25% when brakes are on. It's an "anti-stupid-driver" feature I guess. Why would you EVER want to gas and brake at the same time?

But if you have an electronic throttle that is directly mapped to pedal position, why use an electronic throttle in the first place, right? It's just one more thing that can break...
Reply
Old Jan 14, 2003 | 04:47 PM
  #12  
Daveyd's Avatar
Evolved Member
iTrader: (1)
 
Joined: Mar 2002
Posts: 643
Likes: 0
From: here
Originally posted by Guack007

PS this is my 350th post, when do I become Evolved?
KK, Maybe you can tell us how many posts get us to each "level"..
Reply
Old Jan 14, 2003 | 04:57 PM
  #13  
xenomorph's Avatar
Newbie
 
Joined: Jan 2003
Posts: 13
Likes: 0
Originally posted by chronohunter
IThose systems are usually done for emissions reasons and usually hurt throttle response especially when you lift of the gas
I've noticed this as well. Several BMWs and audi's with electronic throttles keep the revs up for a count or two and then the RPMs start to drop. however, I've not noticed this to any significant degree on the E46 M3

/v
Reply
Old Jan 14, 2003 | 05:16 PM
  #14  
Yojimbo's Avatar
Evolved Member
iTrader: (1)
 
Joined: Oct 2002
Posts: 507
Likes: 0
From: Fort Worth, TX, USA
Originally posted by Guack007
PS this is my 350th post, when do I become Evolved?
Originally posted by Daveyd
KK, Maybe you can tell us how many posts get us to each "level"..
Through some browsing of the members list I've determined that Evolved Member shows up around post number 400.

I have a question for Mark though. Everyone is an Adminstrator who has a substantially larger number of posts than the Evolved Member cutoff. Since they're Admins we don't see a title and I'm extremely curious what the "super huge number of posts" title is?

Last edited by Yojimbo; Jan 14, 2003 at 05:25 PM.
Reply
Old Jan 14, 2003 | 06:04 PM
  #15  
Guack007's Avatar
Evolved Member
 
Joined: May 2002
Posts: 1,290
Likes: 0
From: CA
Originally posted by iodine23
But as was also said, it cuts throttle to 25% when brakes are on. It's an "anti-stupid-driver" feature I guess. Why would you EVER want to gas and brake at the same time?
Ever heard of left foot braking. There are also times when I like to rev match the gears into downshift while im braking into a corner.

PS thnx for the evolved info.
Reply



All times are GMT -7. The time now is 08:26 AM.