265 Hemi to efi

[Holden202T]

changes made to the nvram live will be there for good till you change it .... can always suck a complete bin file out then burn to a memcal for a backup if you want though.

[heff0018]

yeah that's why I said to download cal or bin with the flashtool .... just makes things easier

as for your post above, if you've changed the maximum spark advance from tdc from 60 degrees to 10, that's not the right thing to edit.

your looking for "EST params - Spark reference angle"

the one you changed will limit spark advance to 10 degree all the time.

there.

thanks I will change this back

[heff0018]

changes made to the nvram live will be there for good till you change it .... can always suck a complete bin file out then burn to a memcal for a backup if you want though.

Thanks I understand the process now.

[heff0018]

Its alive, (ignition only) running a bit rough but still running. Not surprising with no sensors installed or running. I have the Camira temp sender and adaptor fittings which I made up ready to install tomorrow. I don't have a narrow band sensor yet but will grab one tomorrow hopefully from Repco or similar. What other sensors would be critical for running/tuning ignition. If I made up a tune just for ignition are there some sensors I should turn off? Cheers

A few pics of a very temporary setup.

[Dazza92VP]

Only sensors you really need are coolant temp, map also plug the tps in don't have to mount it to anything yet but will stop it from using a default spark map and will use the main spark map if you can also prob won't hurt to have the iat sensor fitted into the manifold for a bit of temp corrections

[Jayme]

also first things to check are to make sure the timing is at 10 degrees with the ecu unplugged. then plug ecu in and set to diagnostic mode by bridging the diagnostic wire to earth. the check engine light will start flashing, and this tells the ecu to lock the timing at 10 degrees, put the light on it again and make sure that what the ecu thinks is 10 degrees really is 10 degrees. this will tell you if the spark reference angle is correct.

[Holden202T]

videos or it never happened

[heff0018]

also first things to check are to make sure the timing is at 10 degrees with the ecu unplugged. then plug ecu in and set to diagnostic mode by bridging the diagnostic wire to earth. the check engine light will start flashing, and this tells the ecu to lock the timing at 10 degrees, put the light on it again and make sure that what the ecu thinks is 10 degrees really is 10 degrees. this will tell you if the spark reference angle is correct.

Thanks Jayme, just discovered how important this is. I ran out of time to do put it into diagnostic mode but reinstalled the MSD and ensured I was smack on 10 degrees, reinstated ECU and the timing is way out, retarded I think, amazing it runs. Will lock the timimg soon.

I had a mini heart attack as I thought I cooked the ECU, after reconnecting the ECU plugs I had no spark. Ended up getting it going again by pulling plugs out again and pushing them in really hard. It took a couple of times though, gee they are finicky buggers.

Just another question re the check engine lamp, can I just use any 12v globe and plug to hook this up? I didn't get that from the Camira and I am not sure which wire it is. The wiring diagram shows a brown Nd White wire but I can't work out where that leads to. It may be a White wire which had constant voltage when the ignition was switched on. I guess I should be looking for a wire that pulses voltage while the engine is running

[heff0018]

videos or it never happened

Ha, it's true. I will take a video when I get the exhaust back on and the timing right. It's straight out of the exhaust manifold at the moment.

[Dylan]

Put 12+ to a normal indicator light. And the ECU grounds it.