Technical ECUS compatibility between 1.2 and 1.1

[theweich]

Hello everyone,

I currently have a Seat Panda 4x2 that I am converting to 4x4 with fiat fire engine.

I have bought an engine from Fiat Punto with reference 176B6000 which in theory corresponds to a 1.2 60hp SPI.

The scrapyard sold it to me with wiring but without ECU and sold it to me as a 1.1 54hp but by reference it is a 1.2 60hp SPI.

The ECU I have is a IAW 6F.SB which corresponds to a fiat punto 1.1 SPI.

Is there any problem using the 1.1 control unit with a 1.2 engine? As far as I understand there is no problem.

Does the control unit have Immo?

 

[bugsymike]

Hello everyone,

I currently have a Seat Panda 4x2 that I am converting to 4x4 with fiat fire engine.

I have bought an engine from Fiat Punto with reference 176B6000 which in theory corresponds to a 1.2 60hp SPI.

The scrapyard sold it to me with wiring but without ECU and sold it to me as a 1.1 54hp but by reference it is a 1.2 60hp SPI.

The ECU I have is a IAW 6F.SB which corresponds to a fiat punto 1.1 SPI.

Is there any problem using the 1.1 control unit with a 1.2 engine? As far as I understand there is no problem.

Does the control unit have Immo?

I suspect it will not give you the power that a correct ECU would, fuel metering etc. I don't know about the immobiliser side.
I once fitted a Nissan Micra 1000cc ECU to a Nissan Almera with the bigger engine, I was trying to sort an immobiliser issue by substitution (turned out to be the radio) but although the engine started and ran OK , performance was not as good.

 

[theweich]

I suspect it will not give you the power that a correct ECU would, fuel metering etc. I don't know about the immobiliser side.
I once fitted a Nissan Micra 1000cc ECU to a Nissan Almera with the bigger engine, I was trying to sort an immobiliser issue by substitution (turned out to be the radio) but although the engine started and ran OK , performance was not as good.

In my case the panda does not have any inmo source system, the idea is to keep it that way, I had been told that the mk1s do not have inmo but I already doubt my source hehe.

This same person claims that he has run a 1.1 54hp with an ecu from a 1.2 75hp and should have no problems but I said, I can not assure me nothing

 

[bugsymike]

I could only find a 176B9.000 in a AutoData Timing belt book it says Punt,Bravo Brava, Stilo 1.2 16 valve 1997-08 Sorry.

 

[theweich]

I add some information to the matter, I have read on this forum that certain ECUS have an ECOL label so it does not have immo.

 

[bugsymike]

I add some information to the matter, I have read on this forum that certain ECUS have an ECOL label so it does not have immo.

I do have a book with ECU pin outs including some early Bosch 1AW SPI though it ends about 1998/9 if you have a bit more information. It lists 176B4000.

 

[theweich]

I do have a book with ECU pin outs including some early Bosch 1AW SPI though it ends about 1998/9 if you have a bit more information. It lists 176B4000.

What is the name of the book? Where can I find it?

 

[bugsymike]

What is the name of the book? Where can I find it?

It is Haynes Engine Management , two volumes first is Alfa to Mazda 3558, second Merc to Volvo is 3578.
They only go up to around 1998/9, if you are only interested in the Bosch 1AW I could give you a photo if you give me more info. Sorry about the photo.

 

[theweich]

It is Haynes Engine Management , two volumes first is Alfa to Mazda 3558, second Merc to Volvo is 3578.
They only go up to around 1998/9, if you are only interested in the Bosch 1AW I could give you a photo if you give me more info. Sorry about the photo.

Well, if you have any information about the pinout of the IAW 6F.SB and IAW 16F.E3 ecu's I would appreciate it!

 

[bugsymike]

Well, if you have any information about the pinout of the IAW 6F.SB and IAW 16F.E3 ecu's I would appreciate it!

It seems to be either SPI , MPI or DIS , on the previous poor photo was it possible to identfy with vehicle was nearest using engine code also?

 

[theweich]

I found the answer in this forum, it seems that the wiring of the Fiat Punto 1.2 and 1.1 are the same. From what they say you can perfectly run a 1.2 with the ecu of a 1.1 and vice versa.

Engine swap Q's for an '88 4x4

 

[blu73]

yep a 1242 8v spi ecu will run the 1108 8v spi, and vice versa the 1108 ecu will run the 1242 spi just fine too

the punto75 (1242 8v mpi) will run on the spi ecu but not great, never tried other way round but should work.