14 replies to this topic

[ajusaf]

just curious since same engine if it can work ont he 94 but i;'m sure boosting the turbo and maybe making it most gas effiecient?

[VAVolvo]

I wouldn't since there are other controls that the ECU has that are different in every model. I would assume the controls in the '94 are different than the controls in a '98. Replaceing the ECU like that could throw off your whole system...but I'm mosting assuming this...good question.

PEACE!

[WhiteT5]

Yeah, the S70's use a different ECU software system. It won't work.

[steve s]

98 ecu is 4.4 motronic.
94 ecu is 4.3 motronic. (95-97 is 4.3 too)

4.4 has faster internal processor and in combo with 16t turbo and other stuff, makes more hp. it is not compatible with a 4.3 equipped car.

[Frank Derks]

If both computers are from a high pressure turbo version then the computer from the 1998 will work in your 94 even though they are a different Motronic set up. But it will through a bunch of different codes as then 98 models had more pollution crap on them (ie air pump). I have put a computer from a S70 T5 1998 model in my 96 850R and the car ran fine except for the check engine light was on.

[turbor850]

its a good idea in general, but I don't think it would work out as easily as just swapping ECU's

[BlackT5]

If both computers are from a high pressure turbo version then the computer from the 1998 will work in your 94 even though they are a different Motronic set up.  But it will through a bunch of different codes as then 98 models had more pollution crap on them (ie air pump).  I have put a computer from a S70 T5 1998 model in my 96 850R and the car ran fine except for the check engine light was on.

Is there ANYWAY to get rid of the !@#$%^ airpump on my 98 S70?? Can it be deleted out of the ECU?

[EricF]

If both computers are from a high pressure turbo version then the computer from the 1998 will work in your 94 even though they are a different Motronic set up.  But it will through a bunch of different codes as then 98 models had more pollution crap on them (ie air pump).  I have put a computer from a S70 T5 1998 model in my 96 850R and the car ran fine except for the check engine light was on.

Very cool info Frank

[theunderlord]

If both computers are from a high pressure turbo version then the computer from the 1998 will work in your 94 even though they are a different Motronic set up.  But it will through a bunch of different codes as then 98 models had more pollution crap on them (ie air pump).  I have put a computer from a S70 T5 1998 model in my 96 850R and the car ran fine except for the check engine light was on.

Is there ANYWAY to get rid of the !@#$%^ airpump on my 98 S70?? Can it be deleted out of the ECU?

yes... we need answers... !

[Johann]

If both computers are from a high pressure turbo version then the computer from the 1998 will work in your 94 even though they are a different Motronic set up.  But it will through a bunch of different codes as then 98 models had more pollution crap on them (ie air pump).  I have put a computer from a S70 T5 1998 model in my 96 850R and the car ran fine except for the check engine light was on.

Barometer is also missing from the ME 4.3 cars, will throw a code..

[BlackT5]

Yeah, I have a code for that too.... can I ditch that also?

[tknutson]

so what about putting in a 95-97 R computer in my 95 wagon
and chip the old one???????

sorry forgot to log in

[BlackT5]

yeah, that would work

[tknutson]

yeah, that would work

How is the R computer compared to stock, meybe it would be enough for me until the $$$$$ is there to get a 18t or 19t or similar with a complete 3inch freeflow
and fuel injectors.

Or I could get the R ECU and send my original one to chip it with speedtuning, for the stock 15G UNTIL THE $$$$$