Best D4 Diagnostic Software,

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I have the BT version of the GAP IID tool installed on MacBook Pro, iPad Pro and iPhone X. Works without problems on all three.

Can you leave the iid attached or do you only attach when using it?

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Originally Posted by John_D2

Can you leave the iid attached or do you only attach when using it?

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Yes.

I’d recommend an extension cable to move it away from your right foot.

And

You must disconnect the app before shutting down the car.

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Originally Posted by Tombie

You must disconnect the app before shutting down the car.

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Just to qualify that, you don't actually have to. Quite often if I'm just stopping for fuel or ducking into a shop I won't bother. Just chuck the tablet/phone in the glove box (which I do anyway) and it's all up and running when I get back.

Yes, it stops the car shutting down fully but it doesn't cause any issues aside from increased battery drain.

Also, there is no apparent issue disconnecting after you are out and the car is locked. You probably should deliberately disconnect, but many times I've walked away and forgotten to disconnect and the connection seems to time out. Leave the tablet in the glove box with it connected though and the car will go flat before the tablet does :)

Sounds like the nanocom in my D2 is a better idea! I leave it permanently attached and set to start in instrument mode. Super easy & idiot proof

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Originally Posted by John_D2

Sounds like the nanocom in my D2 is a better idea! I leave it permanently attached and set to start in instrument mode. Super easy & idiot proof

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The Rovacom IQ (also by BBS) is designed to do just this. The IQ is a small terminal that plugs permanently into the OBDII port and you communicate with it via bluetooth on an Android device. The IQ is ignition powered so switches off with the ignition.

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Originally Posted by Tombie

What I can completely recommend is installing Later D4 Terrain response software onto the earlier D4 systems. It makes it *that* much better.

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Is there a way to check in the app what the current version is, and what should it be if it's the latest?

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Originally Posted by TB

Is there a way to check in the app what the current version is, and what should it be if it's the latest?

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ECU info screen.

Read the manual, it is very comprehensive for each task.

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Originally Posted by Tombie

ECU info screen.

Read the manual, it is very comprehensive for each task.

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OK so I've previously done the digital dash update which fixed a glitch with cruise control display. Nothing else showed up as having any available updates so if that's the process then I guess I already have the current version.

Thanks.