ECU Power

[magpies]

I'm going to fit an emerald K6+ ecu. I obviously need both perm power and ign switched power. I have a motorsport isolator fitted too.

Just to confirm that I presume the permanent feed needs to be from the battery side of the isolator to the ecu via a fuse much the same as the radio memory?

[Happy Jim]

Yup, exactly that

Jim

[spitfire4v8]

It doesn't need a permanent 12v feed.
Unless you want the ecu to do a bit of work after key-off (eg if you want an IACV to reset on power-off) just link pins 11 and 28 from an ignition fed supply. Otherwise pin 11 from ign switch and pin 28 from a relay controlled by the ecu (but that pin depends what configuration the ecu is in)
I link 11 and 28 and let the IACV reset at key-on.

[annodomini2]

Fault saving is sometimes done at shutdown, parameter learning, if it has that capability, certainly is done at this time.

It'll work, but you may lose some functionality depending on the ECU capabilities.

[Kevp]

magpies said:

I'm going to fit an emerald K6+ ecu. I obviously need both perm power and ign switched power. I have a motorsport isolator fitted too.

Just to confirm that I presume the permanent feed needs to be from the battery side of the isolator to the ecu via a fuse much the same as the radio memory?

All loads should be connected after the main isolation switch! Otherwise you're not isolating everything.
When the master switch is on, the ecu has a feed. The ignition feed is to actually run the engine, so starting the ecu to work. As there will always be a delay between stopping the engine then isolating the master switch - information will be saved. The master switch has to cut the engine if operated, so will kill power to the ecu. This will only be done in an emergency.