Mercutio's big Clear out(UPDATED)

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Sep 11, 2013 9:46 pm

Thanks - won't be any good for me then, this is for a UKDM H22A2. Was just thinking it might save me the problem of socketting a second ECU

Never mind, thanks anyway.

mercutio · Post by **mercutio** » Wed Sep 11, 2013 9:48 pm

wurlycorner wrote:Thanks - won't be any good for me then, this is for a UKDM H22A2. Was just thinking it might save me the problem of socketting a second ECU
Never mind, thanks anyway.

why is yours 4ws?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Sep 11, 2013 10:06 pm

Yep, it is 4WS

But I thought JDM and UKDM ECU's weren't compatible anyway? And that 4WS made no difference to the main ECU?

Have I got that arse about face then?

mercutio · Post by **mercutio** » Wed Sep 11, 2013 10:18 pm

jdm and ukdm ecu's are interchangeable the only differences are between 3 and 4 plug ecu's afaik

bristol_bb4 · Post by **bristol_bb4** » Wed Sep 11, 2013 10:19 pm

and the only difference between 3 and 4 plug is traction control/no traction control

Post by **Drax** » Wed Sep 11, 2013 11:26 pm

oh god itb's ......

... do i?

Therealjj91 · Post by **Therealjj91** » Wed Sep 11, 2013 11:37 pm

Will the piggyback work on a 5th gen?

mercutio · Post by **mercutio** » Wed Sep 11, 2013 11:44 pm

yes as it was designed to work on the 5g with the jrsc buddy

Therealjj91 · Post by **Therealjj91** » Wed Sep 11, 2013 11:51 pm

Ah I don't have a super charger :p thought it was just a piggy back device lol cheers for getting back to me

Froidas · Post by **Froidas** » Thu Sep 12, 2013 5:28 am

mercutio wrote:jdm and ukdm ecu's are interchangeable the only differences are between 3 and 4 plug ecu's afaik

Actually you are wrong. Besides the TSC there are 2 main differences:
1. knock sensor - JDM has a board for it inside, UKDM, EUDM - don't. If you put JDM ecu on H22A2, you'll get CELL code.
2. map - H22A 200 hp, H22A2 185 hp, different CR, different cams. So different map. This one is the most important difference.

@wurlycorner
4WS ECU and engine ECU are not related at all. So don't pay attention to that "4ws".
By the way, if you can get auto ecu, it is very easy to convert to manual, done it several times.

And are you sure this is UKDM? This is JDM to my mind, because of that J letter. The best way to confirm - open it. JDM will have separate knock sensor board.
37820-p13-N00 552 J-MT 3NO

JDM with knock sensor board:

Without it (this is not P13 to my mind, but doesn't matter, the view is the same):