[auIILTD]

Originally Posted by Caprobbo

Hi all
Can someone who has experience with these AU injected Windsor's have a look and give me an opinion

Happy to prpvide some feedback in some areas that I hope can help.

Originally Posted by Caprobbo

I've noticed the 02s seem to be uneven, they have done 2000k only
Took them out they were a bit sooty as expected

The factory tune is notoriously rich. Your plugs would also be pretty black.

Originally Posted by Caprobbo

When the ECU is in open loop on cold starting the short term fuel trims start at about 18% rich and come down to about 3% till the ECU goes into open then they head straight up to 40% rich

Startup is normally O/L. The ECU will command a lot of extra fuel when the engine is cold (for about 90secs, and then progrssively leaner until the engine is at operating temp). This is the equivalent of an EFI choke. Even when the engine is warm, it will start enrichened, just not as long. Anything over 160 DegF is considered normal operating temps. Not sure what you mean by "the ECU goes into open". I can only assume that you are referring to the car going into open loop at WOT. 40% would not surprise me from a factory tune. In my own car, I have seen the factoy tune go to ~36% rich at WOT. A tuned car (NA) should only be seeing about 18% rich at wot.

Originally Posted by Caprobbo

Can someone tell me if the MAF,idle control,temp etc. are all in spec

All look normal to me.

Originally Posted by Caprobbo

last time it did this I replaced both o2s and it 95% fixed it
They are VDO brand,surely they couldn't be gone again with 2000k on them.

Your o2s look fine. I am not sure of the software that you are using, but despite the graphs looking vastly different, the values shown on the left are very similar and within spec.

Originally Posted by Caprobbo

I also capped all vacuum ports to no effect
Would a bad cam sensor cause this,Ive tried disconnecting it to no effect

All help would be appreciated
Bret.

Hope that helps. What is important if you have made any changes to your intake or exhaust, is to reset your KAMs. This may be worth doing just so your long Term Fuel Trims are cleared and can re-learn your current engine config.

Cheers
Stu