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Old 01-21-2002, 03:58 AM   #1
DanMan
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Default For those looking for stand alone engine management...

I am currently looking into upgrading from a unichip to a full stand alone (or at least mostly) engine management computer. I am currently concidering, but have no real preference over:

-Link ECU
-Haltech E6K
-Tec II or III
-AEM ECU

The biggest issue with this upgrade is the lack of information and testing on the new AGE GD* WRX. If anybody has been concidering an upgrade like this, please email me at harmandan@yahoo.com

The idea is that a number of us I-clubbers ready to make this very expensive, time consuming, and difficult upgrade could as a group:

-research options
-select the best overall option
-purchase the same unit as a group
-use eachother as resources as we tune our cars

In effect, a number of us could pull our heads together and really develop a good sollution.

Assuming there is any interest, I will create a discussion group (on I-club or yahoo) were we can decide how to get started.

I hope this makes sense,

Dan
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Old 01-21-2002, 04:05 AM   #2
wrx_in_efx
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I just posted a thread yesterday with the same concern about an EMS. I will definatly be in on your discussion. I cant decide nor find too much about the LINK or the AEM yet on someones actual car yet. This is going to be an upgrade I WILL DO for sure. I dont want a piggy back I want to tweak it myself!!! Just let me know when your ready.
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Old 01-21-2002, 05:50 AM   #3
MiXer
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Another option is the DTA standalone. For more info you can go to www.dtafast.co.uk ... I've been considering this option as well.

The hard part is finding a place and tuner to install/tune your car.
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Old 01-21-2002, 02:49 PM   #4
DanMan
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MiXer,

I think your missing the point. Yes, the hard part IS finding someone to install and tune you car. This is why the group will work. We can all install and tune the cars ourselves, all the while sharing information and helping eachother getting our cars to run well. Eventually as a group we could rent a dyno out for a day to do some extra testing, etc.

Basically, I'm asking only those interested (and capable) of installing and tuning the WRX themselves.

Dan
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Old 01-21-2002, 02:54 PM   #5
Conduit
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Consider me in on the group.

Regarding the Haltech, Perrin Subaru should have their Haltech plug-in harnesses available.

I also believe that anything that can't drive low-impedance injectors should be ruled out, mainly because we shouldn't have to make that compromise. As far as I know, 600ccs is about the limit on high-impedance injectors that fit (those are opened and flowed Mazda injectors). If that's changed, I'd love to know.

fun fun!
rob
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Old 01-21-2002, 11:24 PM   #6
DanMan
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bump
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Old 01-22-2002, 01:28 PM   #7
RiftsWRX
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I'm in as well!

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 01-22-2002, 01:45 PM   #8
SFastWRX
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I'm interested in joining this club. I am on the waitlist for TXS stage II and I have some other parts coming, but I'm having second thoughts about trying to run the stock injectors at 300+ hp (especially after Jorge's mishap) and I know that's my only option if I want big hp with the Unichip.
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Old 01-22-2002, 01:52 PM   #9
nmyeti
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another thought for you guys is the microtech ECU from AUS... i have been talking to sam roigoli (sp?) about some guidelines for a WRX buildup, and he has offered me this ECU at a very nice price... Just need someone in the states to help tune it...

-Nathan
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Old 01-22-2002, 03:26 PM   #10
RiftsWRX
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That is one thing I like about the Tec-III, Link, and Haltec.

All 3 have options to auto build/self learn a map. Even if it's a crude map, it's still better then nothing.

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 01-22-2002, 09:48 PM   #11
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The TEC II can Auto Clibrate a map as well. Not just the TEC III. It actually works pretty damn good, and I have used it quite a bit tuning the driveablilty type stuff on my WRX. I believe Auto Cal is just part of the newer windows based software (which has been around for a while now).

If you go the Vishnu Forums , there are tons of ppl their with TEC II experience. As well as several years of archives that can help you get through most any problems. It has helped me quite a bit...

Jason Uyeda
2002 TEC'd WRX
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Old 01-23-2002, 02:03 AM   #12
DanMan
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Ok, lets get this going. I created a mailing list on yahoogroups. To join click on the link below:

http://groups.yahoo.com/group/ej20em/

Thanks,

Dan
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Old 01-23-2002, 02:53 AM   #13
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Hello,

Argh! Two threads with the same discussion... See the discussion at http://www.i-club.com/forums/showthr...hreadid=138324 for some talk on stand-alone ECUs. If you are interested in something like the TEC-II/III, please feel free to ask more question in that thread - it's just to hard to keep track of all these threads

Joel Gat
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Old 01-23-2002, 03:11 AM   #14
alfriedesq
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Tunning the stand alone system on a WRX is child's play.

Bottom line - the WRX needs to run RICH - approx 12 / 1 a/f ratio.

Keep the egt's in line and the knock link from going off and your done

Took me about 100 hours to slowly learn the softwear and get it to run decent

Any - repeat - ANY idiot can do it
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Old 01-23-2002, 03:51 AM   #15
shiv
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Quote:
Originally posted by alfriedesq
Tunning the stand alone system on a WRX is child's play.

Bottom line - the WRX needs to run RICH - approx 12 / 1 a/f ratio.

Keep the egt's in line and the knock link from going off and your done

Took me about 100 hours to slowly learn the softwear and get it to run decent

Any - repeat - ANY idiot can do it
Especially when you start off with one of my baseline maps

BTW, the 12:1 air/fuel ratio numbers in the top three rows of your air/fuel ratio is completely arbitrary (and not even right). In other words, the TEC does not regulate the actual air/fuel ratio in accordance to those numbers. I just picked those numbers off the top of my head, just to fill in the graph. You can make those values 20:1 and your car will still drive the same. This is because your closed loop fuel control parameter settings make the car run open loop (no active fuel corrections) when manifold pressure is above 150kPa and when engine speed is above 3000rpm which, BTW, is something I wish I could program the Unichip to do.

Also, since you are running high impedance Sti injectors (which is why your TOG value is lower), you might want to consider tweaking your min. injector on-time, instantaneous AFR error divisor, sampling average number, and # of engine events before sample values. This will improve your idle quality which I know will be poor with your current settings. You're also going the wrong direction with your ignition timing changes. Careful there.

Cheers,
shiv
vishnuperformance.com
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Old 01-23-2002, 09:25 AM   #16
Obscure411
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I have no idea what any of that meant, but it sounds important

I've been considering the Haltech, does anyone know where I can find some more information, unbiased opinions, prices, etc? I've already been to their website.
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Old 01-28-2002, 05:46 PM   #17
phast
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Hmm.. I joined the group and I have generated 2/3 of the traffic over there. C'mon people.. lets talk about it
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Old 02-01-2002, 12:10 PM   #18
Torch
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Count me in. Stand alone is the way to go I just need more info.

Thanks,
Torch
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Old 02-01-2002, 07:29 PM   #19
Kenneth2000
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I'm in too....

I've been struggling with what system to purchase....

I have found out that I do not want a piggy-back.....

So, I had narrowed it down to Haltech, Link and the new AEM.....

thanks,

Brett
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Old 02-01-2002, 11:04 PM   #20
phast
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That's about where I am at.

I'd do the Haltech in a heartbeat (if Jeff Perrin would hook me up with a adapter). It's by far the least expensive option, is more flexible than the Link, and it could be plug n play.

The Link is on backorder for AT LEAST another month. Prices from Performance Developments(only US distributor) are pretty competitive. Plug n play is a huge bonus for this sytem.

I've also had some estimates quoted me on the AEM, but still no ETA. This whole "couple more weeks" deal really makes me mad.

Just a wait and see for right now...
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Old 02-01-2002, 11:49 PM   #21
Sev
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Default Back order?

I talked to Sandstallion they can get the systems for us and I inquired about a price break if we put together a group buy if any one is interested seriously let me know...I will follow with them and get some more info on prices...
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Old 02-01-2002, 11:53 PM   #22
wonthanhboi
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Default been to vishnu site.....

i came into the forums confused as hell on management and came out knowing about the same. What's closed loop and open loop and yeah? I'm beginning to get some of this stuff. Like, ecu retards timing if you're running higher boost i think? And i KIND of know the functions of a stand alone system. Other than that, im management-illiterate. So, i wouldn't trust myself with fine-tuning my own car. That's too bad, i wish i could.
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Old 02-02-2002, 02:30 AM   #23
phast
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Default Re: been to vishnu site.....

Quote:
Originally posted by wonthanhboi
Other than that, im management-illiterate. So, i wouldn't trust myself with fine-tuning my own car. That's too bad, i wish i could.
What better time to learn. Besides, if you get lost you can just drive over to shiv's and get his help. Consider yourself lucky, imho.


Sev,
I'd be in. Check into some pricing. I got quoted $1438 for the Link + $70 for the Serial Link w/software + shipping from Perf. Dev. Still doesn't change the fact that there is at least a month wait. I think they all have to come through Perf. Dev. first.
-jay
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