Jonno74

iTrader: (9)

MY 98 WRX is running a ESL board with a MAF-less map,

Following investigation into massive over fuelling, it turns out the main ECU has a fault causing one injector control line (pin 12 , socket B137) to drive the injector to stay constantly on as soon as the ignition is turned on, not nice !

I've sourced another 6V ECU with the same part numbers, and swapped the ESL sockets board over to the new ECU - (I work in electronics so took it the production area to get done properly!).

However it doesn't seem to operate - turn ignition on, fuel pump doesn't prime, check engine flashes (no MAF), so my question to the experts out there is what do I need to do to initialise the ESL board with the new ECU - assuming it's not supposed to work swapping between two ECU's ?

Thanks,

Jon

piehole1983

iTrader: (7)

Andy Stevens is the man to talk to at ESL.

andy@enduringsolutions.com

Dmacnz

Did you remember to cut the jumper?!

I have put my esl into a few other ECU with no prob. I normally wouldn't even get a check engine light if the ESL wasn't seated in its socket properly!

Andy Stevens

Don't recognise the 6V ECU, that may be an Sport ECU. 97/8 ECUs are not all interchangable, generally you need to replace like with like, 98 WRX should be a 1S or 88.

Jonno74

iTrader: (9)

Thanks to Andy, it turns out my 1S ECU had the wrong cover on it (6V) so I ordered the wrong replacement off fleabay, !! I've found a 1S replacement ECU, on it's way to me now, will then need to do the ESL install,

Thanks for the replies,

piehole1983

iTrader: (7)

Andy's a good lad