To be fair I think its quite easy to overlook the cold fueling table as well it says cold on the label. I initially did and then just decided to give it a try anyways knowing that sometimes the labels dont always mean what you think they mean. Heck cold could be just low enough of a coolant temp that at idle the car cools down just enough to hit it where its colder (without knowing the rational behind the code its just a guessing game).

All I can say is mine has not leaned out once since. I still have to find time to play with the hot starts (I tune most evenings during the week so I dont have much time to play with my own toys).

Jwick, send me a uprev log of both your sort term, long term, target afr, and rpm if you would like me to take a look at it for you.

Ill get a video of mine idling nice once I take it out next time.

Good job Mitch.

Now I need to find time to log my car.

Jason,

If you get time send me the log if you would like. Its not telling me anything about the tune so I wouldn't be stepping on R/Ts toes or anything like that. I would just be more or less curious to see if your car is doing the same as mine.

Absolutely Mitch. I wouldn't hesitate giving you additional data to help with your tests/theories, anything if it means helping this community.

I'll have to do some logs in order to get you this. Which UpRev parameters are you actually looking at? My tuning knowledge is basic so I want to make sure I give you exactly what you are looking for.

I had that happen and my idle went to ****.

Also fwiw I have my rear O2s deleted since I went to boost. Im on ecutek so I cant modify maps on the fly like you guys can on uprev but I haven't seen any negative side effects to it yet?

To just grab a quick log all you have to do is this (this is by memory so hopefully its a 100% correct, I dont have the cable with me currently to check it)

-Open Osiris Rom Editor
-Check for updates
-It will connect to the car and say ECU Ready after the updates are complete
-click logging and tracing
-On the right hand side of that window you will see all parameters you can select, if you happen to select to many it just wont log and you will be left scratching your head lol.
-I would like you to log the following;
-Short Term Fuel Trim Bank 1
-Short Term Fuel Trim Bank 2
-Long Term Fuel Trim Bank 1
-Long Term Fuel Trim Bank 2
-MAF flow (g/sec)
-Target AFR

Hit the red circle to record and then stop recording and save the log under file.

It will be the same ones that show up in those videos I posted last week.

In my opinion its starting to look like these rear O2s should be deleted and removed once the cats are removed.

Nice detailed notes:tiphat:

I'm not that basic, I know how to log just wanted to make sure I knew exactly what parameters you wanted.:tup:

I just typed it out for anyone else following along. This makes it pretty straightforward for everyone.

Its nice to know that the rear O2 sensors should be deleted. I'm getting the occasional check engine light with reference to the rear O2 sensors so before I shell out another 200 bucks to replace it, I will stay tuned to this thread. Great work Mitch.

R.K.

Thanks Rad. Pretty much its looking like those Rear O2s are just a check for the Cat functions. No cats no need to have the ECU check them. I think I am going to get some plugs and remove mine completely here next time I am under the car just to clean it up so they do not snag on anything.

Just an update for mine I have removed the Rear O2's and it has been idling just fine now my wideband reads 14.0 - 14.9. Now I just have to remove that code that came up from that and it is looking good. Thanks for finding this fix Mitco39.

I must be retarded but none of the fuel trims you are referring to bar options on my cipher. would it matter that I only have a standard cable?

Glad it has worked out for you, let me know if you need a hand getting the codes gone. It should be as simple as just turning them off, I can include screenshots if you wish.

They might call it something different with cipher, it should still be able to see these PIDS however. Ill check this weekend for you.

I will probably bring the car to the track tonight and do a few more runs in her. I will also play with the hot starts tonight and see if I can find a happy medium between hot starts and lean out conditions during idling. This is if it does not storm here tonight, there is a 40% chance :shakes head: