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well......

good news.

I spent today ripping out a lot of the BMW wiring, and simplifying.
then I put a new relay in.

and now it works!!!!

so obviously something I had done was not quite...

when running these tests and measuring voltage, I have disconnected the ECU output - it is not driving the relay. I am just measuring voltage.
Next step is to put a light pull down resistor (say 5k)...

I included the schematic page in post #9.
it is the signal in the upper right.
the Service Manual lists circuit 465 as "Fuel Pump Relay Control".

so I was expecting a DC +12 when engine running...

I have plenty of relays I can use.
but what will control it?
what signal (name, circuit #, ECM connector, etc).

I cannot get any output to toggle that would control a new relay...........

...

tried that enabling the Duty Cycle box, and changed duty cycle from 0 to 100, and still no change on ECM output X1 pin 50 (always stays +12 following ign

should I be using a different pin? /...

got the scanner hooked up with the PC.
I had not done that - impressive abilities!

However.......
I do not see a FUEL PUMP control - there is no relay in the fusebox - I assume that would be in...

thanks -

I had been using only the scanner.

I'll connect with laptop tonight......

that sounds like a great idea....

but I am confused.

when you say 'scanner", I assume that means the EFILive V2 ?

what is "DVT controls" ?

thanks,
obviously a neophyte...

thanks guys.

I am using the factory BMW fuel pump, but have deleted the in-tank filter and regulator.
I have gone to an external Corvette style filter/regulator/return to make it easier/cheaper...

Hi,
I am swapping a 2010 Camaro LS3/TR6060 drivetrain into a 2004 BMW Z4. (first that I know of)
It will be California CARB/smog legal......

I have it mechanically in, and reflashed enough to...

I am aware, and abiding by those requirements.
I have done OBDI transplants before, and visited CARB referees (and got the magic sticker).

I was just curious and asking specifically about OBDII,...

awesome!

thank you

understood,

that is why I would want to prevent those particular functions (which I will not have) from setting the MIL.

I thought that is what I could do with the EFILive S/W. (just guessing...

cool - thanks.

(I know what the checksum is and does.
I was meaning did the Smog check verify that it was the original checksum. obviously this would be a "no" per your explanation).

a follow...

Getting back to the original question.....
what specifically will the Smog computers check with regards to the programming?

I am in California.

I am swapping an 2010 LS3 into a 2004 BMW Z4.
...