The Subaru SVX World Network   SVX Network Forums
Live Chat!
SVX or Subaru Links
Old Lockers
Photo Post
How-To Documents
Message Archive
SVX Shop Search
IRC users:

Go Back   The Subaru SVX World Network > SVX Main Forums > MOD Mania > Engine Management

Reply
 
Thread Tools Display Modes
  #136  
Old 12-25-2008, 11:29 AM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

Quote:
Originally Posted by RallyBob View Post
What's the MAP sensor rated at? 2 bar, 3 bar?

You've got me thinking about a TT EG33!
Its a two bar. but you can upgrade to a 3,4or5bar external map if you wanted. I am still thinking about finishing the project you and I discussed while I was up there... Know of any external electric oil pumps I could use?

Tom
Reply With Quote
  #137  
Old 12-25-2008, 05:58 PM
sicksubie's Avatar
sicksubie sicksubie is offline
Registered User
Subaru Bronze Contributor
 
Join Date: Nov 2004
Location: Holden, MA or the White Mountains
Posts: 3,812
Send a message via ICQ to sicksubie Send a message via AIM to sicksubie Send a message via Skype™ to sicksubie
Re: Hydra Nemesis

wow... just, wow.......
__________________
Former:
1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2)
Current:
2017 Ford Raptor
2017 Kawasaki KLR
1995 Guards Red Carrera
1995 Spec-ish Miata - track car
1957 CJ-5
Reply With Quote
  #138  
Old 12-25-2008, 07:26 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

Quote:
Originally Posted by sicksubie View Post
wow... just, wow.......
What, I didn't even send you the maps yet??

Tom
Reply With Quote
  #139  
Old 12-25-2008, 10:17 PM
RallyBob's Avatar
RallyBob RallyBob is offline
Registered fabricator
 
Join Date: Feb 2008
Location: Pleasant Valley, CT
Posts: 277
Re: Hydra Nemesis

Quote:
Originally Posted by TomsSVX View Post
Its a two bar.
2 bar is actually probably plenty for a street setup!

Quote:
Know of any external electric oil pumps I could use?

Tom
I think I have the part number of the oil return pump APS uses on their twin turbo Corvette kit. Those turbos are virtually level with the road!
__________________
Bob Légère

EG33 Impreza tweaks
Reply With Quote
  #140  
Old 12-25-2008, 10:29 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

very cool... would be neat to try at the very least

Tom
Reply With Quote
  #141  
Old 12-26-2008, 06:45 AM
YourConfused YourConfused is offline
Registered User
 
Join Date: Jan 2007
Location: Austin, TX
Posts: 1,276
Re: Hydra Nemesis

So it works w/ the auto huh? What is the price and lead time? If I don't get laid off I should have my new motor built in a few months and would need this to get it running proper.





Quote:
Originally Posted by TomsSVX View Post
It is now available for OBDI automatics as well.

I checked the inputs from the ECU and could only find 2.

1. Engine speed (taken car of)
2. Atmospheric pressure (built into stock ECU... gonna have to deal with a code)

and then there is the torque control line which I may or may not work on in the future. You will lose the torque control, which anyone buying the Hydra probably does not want. If anyone in the future wants to hire me to write a map and program the ECU to use it... I would be willing.

Tom

P.S. I will be working on getting OBDII harnesses made so all SVXi will be able to use this
__________________
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin


blk 92' LSL w/ average mods

pics here http://s306.photobucket.com/albums/nn277/yourconfused/


Cash68: "Hmm, I wouldn't brag about beating Escorts. That's like saying you tricked a retarded person."
Reply With Quote
  #142  
Old 12-26-2008, 08:43 AM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

Quote:
Originally Posted by YourConfused View Post
So it works w/ the auto huh? What is the price and lead time? If I don't get laid off I should have my new motor built in a few months and would need this to get it running proper.
For pricing, send an email to Sales@allwelldrive.net.

Tom
Reply With Quote
  #143  
Old 12-26-2008, 12:42 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

This is the harness I built. I have already contacted Hydra to ask them to build OBDII harnesses in the future so this adapter will not be needed.



Tom
Reply With Quote
  #144  
Old 01-01-2009, 11:18 AM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

OK, new update. I am going to be monitoring the stock torque control functions to see when and why it is initiated. From this information, I will be able to write the flat-shift fuel and ignition cut cycles to be initiated using the stock torque control signal from the TCU to initiate it for the Hydra.

Now it is my understanding that the torque control signal is a constant 5v signal from the TCU that is grounded when the TCU wants it to engage. I merely need to confirm this through some tests using a multimeter and a stock car. Once it is confirmed it is merely taking that information and applying it. This should be a help to those who have autos that want to keep them for longer It can also help those who have mt's w/ the secondary clutch switch. These maps can allow you to keep your foot planted on the gas while you shift, w/o shift shocking the engine or the trans and will effectively make your shifts more efficient when racing... More to come

Tom
Reply With Quote
  #145  
Old 01-01-2009, 04:23 PM
sicksubie's Avatar
sicksubie sicksubie is offline
Registered User
Subaru Bronze Contributor
 
Join Date: Nov 2004
Location: Holden, MA or the White Mountains
Posts: 3,812
Send a message via ICQ to sicksubie Send a message via AIM to sicksubie Send a message via Skype™ to sicksubie
Re: Hydra Nemesis

good stuff.....
__________________
Former:
1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2)
Current:
2017 Ford Raptor
2017 Kawasaki KLR
1995 Guards Red Carrera
1995 Spec-ish Miata - track car
1957 CJ-5
Reply With Quote
  #146  
Old 01-01-2009, 07:41 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

Did some more thinking and reading. The ECU has to supply the 5v signal which the TCU grounds when the torque control is active. With that said, I have modified the Hydra harness to add the torque control line into the factory harness. I will test it tomorrow if I find time.

Tom
Reply With Quote
  #147  
Old 01-02-2009, 06:59 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

well I got the torque control working. Cuts 50% fuel cycles when the TCU grounds the torque control circuit. I have datalogged it monitoring the fuel cut% and it is acting as it should. So torque control is all set.

Tom
Reply With Quote
  #148  
Old 01-06-2009, 02:51 PM
TomsSVX's Avatar
TomsSVX TomsSVX is offline
Maniac modifier
 
Join Date: Dec 2003
Location: Branchburg, New Jersey
Posts: 15,489
Registered SVX Classic SVX
Re: Hydra Nemesis

I was talking with someone about the costs of the Hydra against other leading standalone systems today and felt it would be a good idea to share some information.

Comparable systems like a Utec, Motec, Autronic, AEM, and other seems like a good deal. Many of these systems can be had for less than $1500 USED. New they can cost upwards of $5000. The Hydra Nemesis costs less than $2000 w/o a wideband.

Other systems are not built for the SVX harness and would require the assembly of a full engine-ECU harness or a jumper harness that can cost over $500 to build or over $1000 to have one built.

These ECU's do not come with base maps and require days of start-up work just to get the engine to run... ringing in at approx $250/hour for a professional to do it means you could spend over $3k just to get the car tuned. The Nemesis comes with base-maps that allow you to do a 20min install and start and drive the car. This also cuts down on tuning time. A good tune should be able to be done in just a couple hours by a professional tuner. Meaning it could cost less than $1k to get the car fully tuned to its maximum potential.

There is also the fact that many of these systems have far less resolution for intricate tuning. Many are restricted to a resolution of 12x12 or 16x16. The Hydra uses 32x32 resoltion on ALL 3d maps. This means you can get every point you ever wanted dialed in perfectly.

The point I am trying to make it that if you compare sheer cost of the units alone, while some may be cheaper, it will likely cost you more in the long run to get it working. A great example is the Megasquirt. Besides that fact that you will likely need to re-invent your ignition system with seperate coils and plug wires, you will also need to modify the tone wheel and pick-up sensors. Which all cost money. Even if you did all the work yourself the cost of the new sensors, ignition coils, etc... Then there is the task of creating base maps just to get the car running, no less a decent road tune.

What it comes down to is this, for less than $2000 you can get a real engine management solution that will plug into your car's stock harness, stock ignition system, stock injectors, and stock sensors and will run the car very well. If you wanted to use another system, it would almost surely cost more and still be inferior in quality and precision in comparison with the Hydra.

Compared to ECUtunes software, the Hydra is still a bargain. For $600 you can get a stage 2v7 chip, and a used Z32 MAF. You still need to source your own 370cc injectors which should cost around $500 more if you get rebuilt ones. So that should put you at about $1100 for injectors that are too small to make good power, and the use of a MAF. Now granted, if you are looking to make decent power you will need to upgrade your injectors with the Hydra as well, but you are not limited to a specific size, esp one that small. Not to mention you can use an MAP sensor for a more clear presentation of your engine's actual load.

I know a lot of people looking to do some budget builds and this information may help them in their decision on what kind of management to use.

Tom

Last edited by TomsSVX; 01-06-2009 at 03:02 PM.
Reply With Quote
  #149  
Old 01-07-2009, 07:52 AM
SVXRide's Avatar
SVXRide SVXRide is offline
Official AutoX Part Breaker
Subaru Gold Contributor
 
Join Date: Aug 2002
Location: Midlothian, VA 23112
Posts: 8,138
Registered SVX
Re: Hydra Nemesis

YT,
Good summary. Question for you. Have you given any thought to an in-dash system that will provide the read outs you get with the Select Monitor, since you can't (??) use the Select Monitor once you go with the Hydra.
Thanks.
-Bill
__________________
Retired NASA Rocket Scientist

Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023

Center Network Member #989

'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
My Locker
Reply With Quote
  #150  
Old 01-07-2009, 08:48 AM
Sov13t's Avatar
Sov13t Sov13t is offline
Electronic Counter Measures ON
 
Join Date: Sep 2006
Location: Springfield, Virginia
Posts: 697
Send a message via ICQ to Sov13t Send a message via AIM to Sov13t Send a message via MSN to Sov13t
Re: Hydra Nemesis

An in-car computer could handle the Hydra software.

About the only thing you would need to make sure is that the Serial port is fully addressable. NOT emulated.
__________________
Subaru SVX 94' Laguna Blue - 8.5 C/R Built Motor, 6spd
Reply With Quote
Reply

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 Off

Forum Jump


All times are GMT -6. The time now is 03:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
© 2001-2015 SVX World Network
(208)-906-1122