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Old 11-17-2003, 01:24 PM   #1
rallyshark
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Join Date: Oct 2003
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Location: Raleigh, NC
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Dark Gray Metallic

Cool 2.5 RS ECUs?

I recently found out that the RS is tuned for 87 octane fuel...could a new ECU change your engine config to make it run better with 93 octane and maybe even add some horses? If so, i haven't been able to find any MY00 RS ECUs, someboy got URL out there? NA setup, full stock RS (engine wise)

thanks
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Old 11-17-2003, 02:18 PM   #2
Snagtastic
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Cobb is currently working on the reflash for the ECU of the RS and have told the general public. You would basically give them your specs and they would program it, or you could go down and have them do it in shop for a custom price. If your more interested in what it might be, you can visit Cobbtuning.com and look around.

There is another company with one in the works too, but they havent announced it publically yet.
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Old 11-18-2003, 05:14 PM   #3
garface
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I have a stock RS ECU for sale. You could buy this one and send it to them and then sell your stock one when you get it back. No downtime. Or even if it isn't mine, you get the idea.
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Old 11-18-2003, 05:28 PM   #4
Matt Monson
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You can't reflash an ECU using vapourware.
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Old 11-18-2003, 06:26 PM   #5
millenix
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If they released it without extensive testing and analysis and you got an unfinished product that caused major problems would you be happy? Or would you be more satisfied that all the problems were sorted out prior to your ECU being reflashed.
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Old 11-18-2003, 07:25 PM   #6
Matt Monson
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Quote:
Originally posted by millenix
If they released it without extensive testing and analysis and you got an unfinished product that caused major problems would you be happy? Or would you be more satisfied that all the problems were sorted out prior to your ECU being reflashed.
I am not complaining, I am making a joke. I thought it was funny selling an ECU for a reflash that doesn't exist, that's all.

I have a deposit on Cobb's first batch of headers and another $2000 on my stage II heads that won't be finished for another 2 months or so. Not to mention my bottom end after that, which they'll be building in the spring. And then we'll put it on their dyno and reflash that bugger, WHEN they've got the ECU finished.

Believe me, I have infinite patience when it comes to Cobb's R&D timeline. I waited 2 years for those headers. And now that the Access has become Accessport with changeable maps from the click of a PDA, I can wait another 6 months to a year if need be...Perfection takes time.
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Old 11-18-2003, 07:56 PM   #7
8Complex

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Quote:
Originally posted by Matt Monson
You can't reflash an ECU using vapourware.
I'm agreeing with this, 100%. Add up all the 98-01 RS's and you barely come to the number of cars that were sold for WRX's in just the first year. For that number of cars, there is barely a motivation behind finishing this project.
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Old 11-18-2003, 08:03 PM   #8
SubyBean
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ya like for instance the my99 cobb intake that has been coming out for what like 5 years already.... if you have the patience then by all means wait but i 100%agree with 8 there is nothing worth driving this project.

Brian
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Old 11-18-2003, 09:20 PM   #9
Matt Monson
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Quote:
Originally posted by 8Complex
I'm agreeing with this, 100%. Add up all the 98-01 RS's and you barely come to the number of cars that were sold for WRX's in just the first year. For that number of cars, there is barely a motivation behind finishing this project.
True,
but there are also a ton of EJ25 driven Legacies and Foresters running around...from my covnersations with them they are motivated, just constrained by certain things...And one of them being that the WRX is their meal ticket. It gets priority, no doubt about it. But the headers and the on going work on both the MAF CAI and the reflash shows they haven't abandoned those of us who want to go the NA way. But it does require patience.

If you of of the typical American immediate gratification cult, then Cobb parts are not for you. This is not meant as a slight towards anyone, but the Cobb bashing around here does get a little old. If you can't wait for the parts, give TWE or one of the other truly top notch tuners out there your money. There are MAF intakes out there. Other companies have had headers for these cars for years. We will each speak with our buy dollars at the end of the day...And we all share a love of our Subbies...
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Old 11-18-2003, 09:35 PM   #10
Paul H
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Too bad you guys do not live near Toronto, Yoshio remaps RS ECUs. He even has a winter special that may be worth the drive.
Paul H
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Old 11-18-2003, 09:40 PM   #11
Dolphin Overton
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considering the stock ecu contributes to the car not making **** for hp for how big the engine is, this is a good thing. I can't wait.
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Old 11-19-2003, 08:35 AM   #12
Paul H
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If any of you are interested in coming into Toronto to get your ECU remapped send me a PM and I can give you details.
To be honest, the 2.5 RS stock ECU does a pretty good job. Remapping a stock 2.5 will get you a smoother acceleration and better gas mileage but the HP gains will be nominal. With exhaust, CAI, and cams there will be good HP improvements along with the other benefits. That being said one TSC member just had his done with an exhaust system only and he is very happy with it. On the flip side there are some people that did not have their expectaions met.
Paul H
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Old 11-19-2003, 02:15 PM   #13
zzyzx
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Lightbulb

Yoshio in Toronto has been doing this for years:

http://www.japanese-auto.com/main.html

There have been many review both here on NASIOC and other boards. Good place to ask questions is at this board:

http://www.toronto-subaru-club.com/

[Oops, shoud have read better, but at least you now have some links...]

- Steve
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Old 11-19-2003, 03:32 PM   #14
Matt Monson
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'73 914 and 2012 BRZ

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Gains with a reflash will have a lot to do with whether you have a MAP or a MAF. The MAF's tend to be a little "smarter" and give you close to the max HP out of your mods. A MAP based car can benefit a little more from a reflash because they just aren't as accurate to start with... But still we are talking about 5-10hp depending on mods. I personally wouldn't be thinking about it if I wasn't going to be running 12.0:1 CR on my car...
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Old 11-20-2003, 12:19 AM   #15
ImprezaRS dot com
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Default Re: 2.5 RS ECUs?

Quote:
Originally posted by rallyshark
I recently found out that the RS is tuned for 87 octane fuel...could a new ECU change your engine config to make it run better with 93 octane and maybe even add some horses? If so, i haven't been able to find any MY00 RS ECUs, someboy got URL out there? NA setup, full stock RS (engine wise)

thanks
The whole idea of the ProECM and the torquechip is to get more timing advance out of the stock ECU without having to modify the ECU. At least until the Cobb reflash is available, either of these chips is your best bet.

Larry
www.ImprezaRS.com
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Old 11-20-2003, 01:15 PM   #16
Supraru
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Cobb will never come out with an Rs ecu. He will never come out with the my 99' cold air intake. I don't know why he insists on lying about it. I think as a buisness man he's not all there and his products aren't that great exept the ones that are already made and he puts his name on.
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Old 11-20-2003, 02:17 PM   #17
JenisonWRX
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thus ... those who are doing it now are the solution other then staying stock.

I may just send my ecu out and say fuggit.
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