MY00 2.5 Reflash to MY02,03,04,05,06,07, etc??? - Subaru Impreza GC8 & RS Forum & Community: RS25.com

station2station · 08-17-2007, 10:30 PM

*Searched

I read today about ECU tuning (just out of boredom and interest) and how dealers like to modify ecu's to have "play" in them.
So then is it possible that an MY00 ECU could be updated to say an 07' or so?

1. Are there any differences to begin with?
2. Other possible mechanical changes?
3. Am I making any sense or should I go to bed now?

sn00py · 08-17-2007, 10:51 PM

no u cant do that and put down the crack pipe.

station2station · 08-17-2007, 10:55 PM

Damn,

station2station · 08-17-2007, 11:11 PM

Any more in-depth opinions?

station2station · 08-17-2007, 11:12 PM

Quote:

Originally Posted by sn00py

no u cant do that and put down the crack pipe.

but why doesn't that work...this question cannot be that far-fetched...

because when I had my RX8 I msut have had that thing reflased 6 times.... I think they are up to 9 reflashes now or something... And you could use newer years...

Yes Yes... I know not the same car and all that jazz... but I figured the motors couldnt possibly be that much different...

ACraPPyRS · 08-17-2007, 11:21 PM

I know that the WRX and STi guys get reflashes...and I think even some of the older RS ECU's can be reflashed as well. Now if your ECU can be reflashed then theres no reason why you couldn't reflash it to the factory setting of another MY (don't see why you would want to...but I'm sure you could). Newer RS/2.5i ECU's can not be messed with at all, i think, because I was looking for a reflash when I turbo'd my MY05 RS and I couldnt find a damn thing for it...had to get a piggyback.

aspect · 08-17-2007, 11:23 PM

The motors are that much different.

ACraPPyRS · 08-17-2007, 11:26 PM

Quote:

Originally Posted by aspect

The motors are that much different.

your telling me the AFR's, fuel trims, timing, ect. are extremely different between say and 01 and an 04? Shouldn't be that different because theres universal maps that come with piggybacks like pp6 that work on a wide range of Impreza's without any adjusting needed.

FalconRS · 08-18-2007, 06:23 AM

Dealer's don't reflash for "play", they reflash them for updates that improve engine operation or durability of a certain component. There was a reflash for I think 00-01 RS's and Legacy's to coincide with those cars tendency to eat a/f sensors because they were setup too rich from the factory. The reflash leaned them out a bit on the lower end to extend sensor life.

You can't flash from one year to the other. The ECU hardware changes, in some cases dramatically, from year to year. 98 is it's own animal (DOHC, MAF), 99 is it's own animal (SOHC, MAF), 00-04 are similar (SOHC, MAP), but there were something like 150 different physical ECU's used in that span. 05 is it's own animal (SOHC, MAF - different from 99 MAF, drive-by-wire throttle, different cam profile), 06 is it's own animal (SOHC, MAF, DBW, AVLS), and if I remember correctly 07 is yet another completely new ECU (similar to 06 operation wise, but uses the new CANbus protocol).

station2station · 08-18-2007, 09:43 AM

Thank you for the posts. I was just curious, because I knew that eh 04 motor was the same but I didn't know that it couldnt be updated.
Thanks for the replies.

08-17-2007, 10:30 PM	#1 (permalink)
station2station 2.0L Turbo Car: 2000 Impreza 2.5RS BRP Coupe Fav Mod: RS25 Decals My: Subaru Parts My: Subaru Blog Join Date: Feb 2007 Location: Shreveport,La Trader Rating: (2) Posts: 1,356	MY00 2.5 Reflash to MY02,03,04,05,06,07, etc??? Searched I read today about ECU tuning (just out of boredom and interest) and how dealers like to modify ecu's to have "play" in them. So then is it possible that an MY00 ECU could be updated to say an 07' or so? 1. Are there any differences to begin with? 2. Other possible mechanical changes? 3. Am I making any sense or should I go to bed now? __________________ When this baby hits me, I'm gonna call the cops Last edited by station2station; 08-17-2007 at 11:12 PM..*

08-17-2007, 10:55 PM	#3 (permalink)
station2station 2.0L Turbo Car: 2000 Impreza 2.5RS BRP Coupe Fav Mod: RS25 Decals My: Subaru Parts My: Subaru Blog Join Date: Feb 2007 Location: Shreveport,La Trader Rating: (2) Posts: 1,356	Damn, __________________ When this baby hits me, I'm gonna call the cops Last edited by station2station; 08-17-2007 at 11:13 PM..

08-17-2007, 11:11 PM	#4 (permalink)
station2station 2.0L Turbo Car: 2000 Impreza 2.5RS BRP Coupe Fav Mod: RS25 Decals My: Subaru Parts My: Subaru Blog Join Date: Feb 2007 Location: Shreveport,La Trader Rating: (2) Posts: 1,356	Any more in-depth opinions? __________________ When this baby hits me, I'm gonna call the cops

08-17-2007, 11:21 PM	#6 (permalink)
ACraPPyRS 2.2L Turbo Car: 2005 RSTi Fav Mod: EJ257 :) My: Subaru Parts Join Date: Jul 2006 Location: Bronx,NY/Bloomington, IN Trader Rating: (4) Posts: 2,154	I know that the WRX and STi guys get reflashes...and I think even some of the older RS ECU's can be reflashed as well. Now if your ECU can be reflashed then theres no reason why you couldn't reflash it to the factory setting of another MY (don't see why you would want to...but I'm sure you could). Newer RS/2.5i ECU's can not be messed with at all, i think, because I was looking for a reflash when I turbo'd my MY05 RS and I couldnt find a damn thing for it...had to get a piggyback. __________________ Phi Kappa Sigma!

08-17-2007, 11:23 PM	#7 (permalink)
aspect 3.3L Car: 1999 ver7 coupe Fav Mod: 11.5:1 steering rack My: Subaru Parts Join Date: Mar 2006 Location: prescott, az Trader Rating: (5) Posts: 508	The motors are that much different. __________________ 1999 STM coupe squirrel mincer stage 100

08-17-2007, 10:51 PM	#2 (permalink)
sn00py 1.8L Car: 2008 Legacy My: Subaru Parts Join Date: Jul 2007 Location: Dallas,TX Trader Rating: (0) Posts: 43	no u cant do that and put down the crack pipe.

08-18-2007, 06:23 AM	#9 (permalink)
FalconRS Un-Banned, but on parole Car: 2005 Impreza RS Wagon Fav Mod: Loud ones My: Subaru Parts My: Subaru Blog Join Date: Aug 2004 Location: Winnipeg & Falcon Lake, Manitoba, Canada Trader Rating: (0) Posts: 4,539	Dealer's don't reflash for "play", they reflash them for updates that improve engine operation or durability of a certain component. There was a reflash for I think 00-01 RS's and Legacy's to coincide with those cars tendency to eat a/f sensors because they were setup too rich from the factory. The reflash leaned them out a bit on the lower end to extend sensor life. You can't flash from one year to the other. The ECU hardware changes, in some cases dramatically, from year to year. 98 is it's own animal (DOHC, MAF), 99 is it's own animal (SOHC, MAF), 00-04 are similar (SOHC, MAP), but there were something like 150 different physical ECU's used in that span. 05 is it's own animal (SOHC, MAF - different from 99 MAF, drive-by-wire throttle, different cam profile), 06 is it's own animal (SOHC, MAF, DBW, AVLS), and if I remember correctly 07 is yet another completely new ECU (similar to 06 operation wise, but uses the new CANbus protocol). __________________ 2005 Impreza 2.5RS Wagon

08-18-2007, 09:43 AM	#10 (permalink)
station2station 2.0L Turbo Car: 2000 Impreza 2.5RS BRP Coupe Fav Mod: RS25 Decals My: Subaru Parts My: Subaru Blog Join Date: Feb 2007 Location: Shreveport,La Trader Rating: (2) Posts: 1,356	Thank you for the posts. I was just curious, because I knew that eh 04 motor was the same but I didn't know that it couldnt be updated. Thanks for the replies. __________________ When this baby hits me, I'm gonna call the cops

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