2004 ecu swap for a 2008 ecu

jucelino · 12-01-2009, 07:50 AM

Is it possible to swap a 2004 ecu for a 2008 one without flashing anything ?
I have a 2004 ecu and a got a brand new ecu from a wrecked 2008 rx8
Will it block my car ? because of some safety feature ? imobilizer maybe.
will it change the millage ?

Thanks

The Partsgroup · 12-01-2009, 10:50 AM

They willnot interchange without removing the immobilizer from the 2004 ecu. It will them work with your 2008 RX8.

jucelino · 12-01-2009, 05:42 PM

can i just take my 2004 rx8 imobilizer off ? and put in the the new 2008 ecu on my 2004 car ?
Any wiring involved, sorry for my ignorance.

05rex8 · 12-01-2009, 08:40 PM

why is it you want to swap ecu's anyway?

jucelino · 12-02-2009, 02:11 AM

I think new ones have extra memory, so if i have one siting quietly in the shelf, why not install it.

05rex8 · 12-02-2009, 03:57 PM

Where did you hear that? As far as I know the 04 pcm is the same as the 08. It might have a different flash, but that's something the dealer can update for you if it was needed. Or buy a Cobb accesport and learn how to tune it yourself or have a tuner do it for you.

Dannobre · 01-05-2010, 06:26 PM

You can't even swap an 04 for another 04 without re-programming it....

12-01-2009, 07:50 AM	#1
jucelino Curious Guy Join Date: Dec 2009 iTrader: (0) Posts: 5 Rep Power: 0	2004 ecu swap for a 2008 ecu Is it possible to swap a 2004 ecu for a 2008 one without flashing anything ? I have a 2004 ecu and a got a brand new ecu from a wrecked 2008 rx8 Will it block my car ? because of some safety feature ? imobilizer maybe. will it change the millage ? Thanks

12-01-2009, 10:50 AM	#2
The Partsgroup Rotary Fan in Training Join Date: Apr 2008 iTrader: (1) Posts: 76 Rep Power: 17	They willnot interchange without removing the immobilizer from the 2004 ecu. It will them work with your 2008 RX8. __________________ The PartsGroup Inc. Your Source For New & Used RX8 Parts www.Partsgroup.com 256-309-0492

12-01-2009, 08:40 PM	#4
05rex8 Turbo 8 Join Date: Oct 2008 iTrader: (0) Posts: 131 Rep Power: 17	why is it you want to swap ecu's anyway? __________________

12-02-2009, 03:57 PM	#6
05rex8 Turbo 8 Join Date: Oct 2008 iTrader: (0) Posts: 131 Rep Power: 17	Where did you hear that? As far as I know the 04 pcm is the same as the 08. It might have a different flash, but that's something the dealer can update for you if it was needed. Or buy a Cobb accesport and learn how to tune it yourself or have a tuner do it for you. __________________

12-01-2009, 05:42 PM	#3
jucelino Curious Guy Join Date: Dec 2009 iTrader: (0) Posts: 5 Rep Power: 0	can i just take my 2004 rx8 imobilizer off ? and put in the the new 2008 ecu on my 2004 car ? Any wiring involved, sorry for my ignorance.

12-02-2009, 02:11 AM	#5
jucelino Curious Guy Join Date: Dec 2009 iTrader: (0) Posts: 5 Rep Power: 0	I think new ones have extra memory, so if i have one siting quietly in the shelf, why not install it.

01-05-2010, 06:26 PM	#7
Dannobre Rotary Fan in Training Join Date: Oct 2008 iTrader: (0) Posts: 87 Rep Power: 17	You can't even swap an 04 for another 04 without re-programming it....