Guru review please? Any anomalies in the log charts below?

[Okedokey]

Hi guys,

I have had some codes lately, related to fuel, o2 sensors and EPC. After clearing them I only get the rear o2 sensor response error due to the HFC even though I have installed the spacer. The car drives nice still, with may be a bit of a roughish idle however I am leaning towards carbon build up which is one of my next jobs. In the meantime, can anyone spot issues with following charts from a log last night from about 50 minutes driving on city and highway.

Thanks!!

[derrek]

Do you have the csv files?

Edit: why did you take a 50 min log?

[shahk62]

Having the error with the space is still common unfortunately. The minicat is probably the best way to get rid of it. Otherwise using a tune to get rid of it


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[allstock]

What did you use to get these values.

[Okedokey]

I used VAGCOM and yes I so still have the CSV files. Just put them in excel to chart.

Having the error with the space is still common unfortunately. The minicat is probably the best way to get rid of it. Otherwise using a tune to get rid of it

When you say mini-cat do you mean something like the 034 one? That is what I have.

Just another point, a lot of the last half of the curves are on cruise control at 60mph. Should the fuel rail fluctuate so much?

[shahk62]

I used VAGCOM and yes I so still have the CSV files. Just put them in excel to chart.




When you say mini-cat do you mean something like the 034 one? That is what I have.

Just another point, a lot of the last half of the curves are on cruise control at 60mph. Should the fuel rail fluctuate so much?

Something like that but sucks that you still have codes.

It's actually really hard to say unless you were driving on a flat ground which the highways aren't.


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[Okedokey]

Down lane cove tunnel and say 20 min down m2. Pretty flat there for the most part. Wondering if there is a fuelling issue? There is no CEL, just a code, so I think its possibly the standard 02 rear code with the HFC. You can actually see the highway too and from sections on the blue MAF curve where it is reasonably flat. One good thing, my intake temp didn't go above 10oC delta so thats pretty good evidence of the CAI i think, however it would be good to see someone with a stock cai do the same.