BC-5 Pre and Facelift (RS and GT) ECU differences?

[Guest]

Hiya people,

I've tried searching on the differences between the bc-5 rs and gt ecu's, and i understand that the RS's have an 8-bit ecu and the gt's have a 16-bit ecu...the reason why I am asking is I am looking at buying a link computer out of an rs legacy but I have a GT...I'm wondering if this ecu will run my car fine or if it will infact not work in my car?

Thanks.

[BC5RA]

You are incorrect on the 8 bit RS and 16 bit GT.

It is generational for both models. Same year/same ECU. The differences were what was written into the programs.

Series 1 = 8 bit

Series 2 = 16 bit

Any 4 plug Link will go straight in regardless.

[BC5RA]

 CUDDAS said:

Hey hi there, I too am interested in finding some info on my ecu's as i have an 89 RS, & 90 GT & have used both ecu's & with 2 type's of chip's in my cars, At the moment i'm running on a RS loom in my GT

C7

22611 AA740

A11-000 RA3

with a modcontrol chip. 4 PLUG ECU

ALso have

C6

22611 AA600

A11-000 RA2

with a chip that was in my GT when i bought it. If any one has some info on these 2 ecu's. THANKS

C7 is an Auto 8 bit code.

C6 is a Manual 8 bit code.

Are both chips 8 bit?

[BC5RA]

Differences would be negligible, besides Boost control for VF10/VF8 which i would say share the same wastegate spring setting (6psi)

[DRFVDR]

we are talking the Auto GT right as my 1990 GT (wagon)was a factory manual and had the same gear in it as the RS

[BC5RA]

Some would say there is no such thing as a manual GT.

I've seen all sorts of discrepancies.

[DRFVDR]

 BC5RA said:

Some would say there is no such thing as a manual GT.

I've seen all sorts of discrepancies.

AFAIK all Wagons were GT's regardless of gearbox

Manual Sedans=RS Auto Sedans=GT

hence my FACTORY Manual Wagon was a GT but had the bigger turbo and manual ECU

but now it is eg33 powered

[BC5RA]

No argument from me.

[Guest Oscar]

 DRFVDR']

[quote name='BC5RA said:

Some would say there is no such thing as a manual GT.

I've seen all sorts of discrepancies.

/quote]

AFAIK all Wagons were GT's regardless of gearbox

Manual Sedans=RS Auto Sedans=GT

hence my FACTORY Manual Wagon was a GT but had the bigger turbo and manual ECU

but now it is eg33 powered

This will confuse you then. My manual GT wagon had a VF-10.

[BC5RA]

These models are old, by the time we get or hands on them who knows whats been changed.

[Guest Oscar]

That is true, but dealership parts system confirms VF-10 from the factory.

[Bazza-NZ]

 BC5RA']

Hey hi there, I too am interested in finding some info on my ecu's as i have an 89 RS, & 90 GT & have used both ecu's & with 2 type's of chip's in my cars, At the moment i'm running on a RS loom in my GT

C7

22611 AA740

A11-000 RA3

with a modcontrol chip. 4 PLUG ECU

ALso have

C6

22611 AA600

A11-000 RA2

with a chip that was in my GT when i bought it. If any one has some info on these 2 ecu's. THANKS

C7 is an Auto 8 bit code.

C6 is a Manual 8 bit code.

Are both chips 8 bit?

Would you know what a K3 is for?

[quote name='Oscar said:

That is true, but dealership parts system confirms VF-10 from the factory.

this is true, all GT (wagon) came out / should have come out with VF10... i was looking at doing a GT restoration with my mates car so he is doing everything by the book, man trying to used orginal parts is costly these days

[BC5RA]

 Oscar']

That is true, but dealership parts system confirms VF-10 from the factory.

Must be a GT specific item rather that 5MT.

[quote name='Bazza-NZ said:

Would you know what a K3 is for?

K3 is a 16 bit RS ECU.

[Bazza-NZ]

 BC5RA']

That is true, but dealership parts system confirms VF-10 from the factory.

Must be a GT specific item rather that 5MT.

[quote name='Bazza-NZ said:

Would you know what a K3 is for?

/quote]

K3 is a 16 bit RS ECU.

now that is very interesting, that is what i have currently in my 92 GT... (does that sound right?) because the other ECU i was going to try in it to eliminate some issue is the C6 i have...

but i'm assuming 8 and 16 bit are not going to be transferable? should my non face lift wagon be running a 16 bit ecu (might be my problem right there?)

[BC5RA]

I can't speak on what Subaru decided to fit to each model.

8 bit and 16 bit ECUS are interchangeable.