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#1
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ECU query
Hi All,
I have an New Zealand new 1995 SVX which is having ECU issues (OBD1); will JDM 1991 ECU work as a replacement? Or s there a firmware or wiring difference with different years? If firmware difference can they be updated? Cheers John |
#2
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Re: ECU query
John,
post some pictures of the part numbers from the unit...
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1995 LSI, Added the following - Gear Firm-Up unit (that I sell) together with Power TCU ROM & Power switch, K&N air filter, SVX side badges (USA type), Rear Deck Blower (JDM type), Side front markers (USA type), Side rear markers (USA type), Middle rear light (USA type), USA OEM Fog Lights fitted into NZ OEM glass (NZ OEM headlights had only reflectors fitted) Full set of yellow (90SH) Polish bushes includes 15 min mod, R1 Concepts drilled/slotted/gold finish rotors & Red covered braided brake lines (both from Dayle at Motorsport warehouse), EBC Redstuff brake pads. Full SVX bra (only used for shows). Koni adjustable inserts fitted inside OEM strut body, Zoom lowering springs (2" lower), OEM headlight washers fitted. |
#3
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Re: ECU query
Last edited by John Field; 08-23-2020 at 11:52 PM. Reason: Change picture info |
#4
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Re: ECU query
I don't have the answer to your question, but here are some SVX ECU resources I've found useful in the past:
Overview: http://www.alcyone.org.uk/ssm/ecuinfo.html List of different ROM images: http://www.alcyone.org.uk/ssm/ecuroms.html How to modify the ECU image: http://www.alcyone.org.uk/ssm/ecumod.html Hope it's useful. Cheers, Ian. |
#5
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Re: ECU query
Many Thanks!
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#6
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Re: ECU query
Hi All,
I received the following from Phil in the UK: "The different market ECUs are not 100% interchangable, the car will run but unless you are lucky, you will get error codes. If you need a replacement ECU then I would advise to try and get one from NZ, Australia, or the UK. Maybe Europe also, I'm not sure that all the European ones are the same though. The JDM cars have catalyst temperature sensors, a 180kmh speed limiter, and they don't have EGR control. The Euro/UK cars have EGR and I assume the Aussie/NZ ones are the same. The US cars have a different sort of EGR and an atmospheric pressure sensor. When I tried a UK ECU in my JDM car I got an error code because of no EGR system." Fingers crossed I am lucky! Has anyone installed any alternative ECUs? Cheers John |
#7
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Re: ECU query
JDM unit swapped out and returned error 32 & 37 (LH & RH O2 sensors); turns out my SVX doesn't have them so explains the errors! My original ECU is off for repair and hopefully comes back all good again!
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#8
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Re: ECU query
They make O2 sensor emulators/simulators. They are very cheap and fool the ECU into thinking the O2 sensors are present. Folks use them when they remove all the catalytic bits and change the exhaust for better sound and performance.
This will only work if the wiring is there for the sensors to connect the simulators.
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1997 Bordeaux Pearl, 2006 Alfa Romeo Brera 3.2 6MT, 2010 Mercedes Benz GLK350, 2018 BMW 640i GT Xdrive, 2012 Moto Guzzi Norge GT 8V, Last edited by Blacky; 09-03-2020 at 02:33 AM. |
#9
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Re: ECU query
Thanks for the info!
Not sure if the wiring exists... if my original ECU comes back as no good will look at that option. Saves driving around the CEL on all the time! Loving having my girl back! |
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