265 Hemi to efi

[heff0018]

Yeah it was a big relief. Thanks for everyone's input, it's a pain that something so simple had wasted so much time but on the positive side I have learnt a hell of of a lot about ignitions and timing over the last week. Now on to the fuel side.

I spent a bit of time on the wideband without much success. The sensor was only putting out 0.7 of a volt which doesn't seem to move the wideband on tuner pro dashboard. I just got it to flicker just a bit. Maybe the bung is not close enough to the exhaust outlet but it is about two foot down the pipe which I believe is what they say in the installation manual.

Tuner pro was also throwing a hissy fit today and kept disconnecting, i had to restArt the laptop at least 10 times and I haven't had any problems before. The only thing I can think of was the heat, it was stinking hot today in the shed.

Does anyone have any tips on where to position the bung for the narrowband sensor, I reckon the camira one is in the exhaust manifold itself so I am thinking as close as possible.
Cheers

[Dylan]

A wideband can go right back at the tail pipe and work as they're heated. Have you ot both the earth's in good spots?
Cn your controller output fixed voltages for calibrating? Could help trck down the problem. Sensor or controller.

I've had trouble in the past witj my laptop and tht issue on car's with MSD's if my USB cables sits near my power lead when running from the cigarette lighter plug. Especially when the revs are on the way down. Have to do a reboot to connect.

So your commanded timing matches the actual now in diagnostic and normal running mode?

[heff0018]

Thanks Dylan, but not sure what this means.

Cn your controller output fixed voltages for calibrating? Could help trck down the problem. Sensor or controller.e?

I wired the earths to the Camira loom black ground wire that connect to the head. I tested the earth with a volt meter and all good.

Yes the timing all matches now and operates as expected.

[Dylan]

Good news on the timing numbers matching.
With the wideband signal might be better practice to have the signal earth seperate from the others.
I run mine to the narrow band earth input at the ecu think it's D6 off hand.

[heff0018]

Thanks Dylan, yes it is D6. I will give that a shot.

[Charlescrown]

Fouled plugs!! Well at least you found it. I am surprised that the carbie was running so rich and you didn't find out before but as you said WE have all learned a lot. Keep up progress reports as you go. This is an interesting project and we all want to see the outcome.

[heff0018]

Thanks Charles, kind of embarrassing actually but a relief it was something simple. Picked up a drill bit to modify a stock intake for injector bungs so will give that a shot this weekend hopefully. I will first try a stock Hemi manifold with injector bungs, V6 elbow and vn v8 throttle body setup first and then later on go for something mote extravagant. Cheers

[heff0018]

Had a day off work today and made this up and it was a lot easier than I thought it would be. A 19.5mm drill bit $57, 6 steel injector bungs $60 60 and a packet of JB Weld $ 14and of course a custom made fuel rail about $300. I will clean it up a bit once it fully dries which should be tomorrow sometime.

[Charlescrown]

Don't know much about JB weld but I suppose all it's got to do is seal an air leak. Thought about machining a groove in the bungs and pushing then into the 19mm holes. Big drills get expensive don't they. So next step is to mount the throttle body.

[Holden202T]

that'll work well enough and long enough for a test rig