Good lord you're running rich. Probably time to get that thing properly tuned.

 

Any recommendations for remote tuners? Currently running Cobb Stage 2 91 😬 going to replace injectors first and see if that helps.

 

maybe a dirty fuel filter? I doubt it but it is easy to access and kind of cheap.

 

Does it idle rough right when starting it, or does it do it after a while? If it's rough right away, what's your STFT doing? I had a similar issue a while ago, and threw the parts cannon at it (new injectors and coil packs even). It ended up that the upstream o2 sensor I put in (to try to address my miss fires at idle) was faulty, and replacing it again fixed my issue. That probably is not your issue.

First see if you can get your intake smoke tested. A leaky intake shouldn't cause your issues unless it's happening between your intercooler exit and the head, because of the MAP sensor locations. But it's still helpful.

Another test I found useful was that my car would run fine after I reset the ECU learning. After running for about 15-30 seconds, it would start learning again and idled bad. If yours does the same, then you should be able to narrow it down to be related to one of the sensors.

edit... I'll add that it could also be something that is affecting the sensors. The only thing I'm thinking of is if your downpipe doesn't have a good seal to the turbo, it can scavenge outside air in, so your o2 thinks it's running lean, and will continue adding fuel. <-- That's what my guess would be the issue... if it runs fine after clearing the KAM.

 

I’m going after exhaust leaks next. Then the tune since I’ve already replaced the o2 (hoping it wasn’t defective)

 

Don't people have an issue with idle when their evap purge thingy fails? Sorry for my un-scientific lingo. Someone else knows the part I'm talking about. Sure is cheaper than a set of injectors.

 

It’s the fuel rail pressure sensor just fixed this and put new plugs and o2 for no reason. The fuel sensor did the trick

 

Miss this bit??

"Now I’m throwing a p0171 so I’ve read that the next step is the fuel pressure sensor, so I just replaced that today. Still has the same issue"

 

Probably the pump then or injectors most likely the pump

 

Aye guys have a update, ended up being the injectors. Just replaced them and so far so good. Will update if any codes come back but idle is good! 🤙🏼
Also reverted back to stock tune until I can get a legit one

 

Pics of the injectors for your entertainment 😑

 

How much did new injectors cost you?

 

OEM Rock auto were 51 a pop...last time I checked

 

With your Turbosmart IWG, you should continue running that tune. The stock tune (and off the shelf Cobb tunes) don't account for that change.

 

Oh shoot, not sure if I have that tune anymore, more information on why below. It was suppose to be tuned by them before I bought the car but had a issue once viewing the tune

 

So now my code is back, but idle is good (maybe not perfect but definitely better) and it doesn’t die anymore. Unplugged battery and everything, still shows. The troubleshooting continues, at least for that damn code

 

Next logical step would be getting another custom tune for the hardware you got.

 

More updates!
went with a custom tune from Alan Jackson, on revision 1 right now but stopped the process because even that did not fix my idle issue. Gapped my plugs, replaced upstream o2 sensor again (just incase my previous was faulty) and still having rough idle. Went back to stock OEM tune for ****s and giggles and my rough idle went away? But I still have p0171 popping up and now a p219A. Havnt been going into boost, but when I do I notice a lot of black smoke out of exhaust. Pics of my o2 sensor will be attached. Going with fuel filter next and when I get my car shipped to New Jersey, I will finally be able to get it smoke tested and maybe walnut blast the valves if no leaks are found. Will also be doing a compression test soon

 

Another update!

Changed fuel filter, no change. It was easy to do though and I read that it’s recommended every 30-50k miles. At this point I’m trying to be positive and say I’m doing “routine maintenance” 😂

I did complete the compression test, and numbers are as follows
178 cyl 1
178 cyl 2
178 cyl 3
180 cyl 4

So thank god that came out good. Still having rough idle on custom tune but good idle on stock tune (still shows codes though). Will do more troubleshooting after car arrives in Jersey at the end of June or start of July 🤙🏼

Edit:
Also found out that my head gasket recall was done at 3k miles. Currently at 37k

 

Check fuel Evap purge valve that’s common issue to and affects idle

 

That was the first thing I replaced months ago. Helped with a issue I was having after getting a full tank of gas.

 

Who fitted it

 

All fixed finally! Was my downpipe gasket pre o2. Was cracked, picture for reference

 

How did you diagnose that? Smoke test?

 

Who's Alan Jackson? I'd tune with someone reputable in the community. Tune+, Stratified, Randy at tunewerks. I did a quick google and couldn't find the guy you're going thru.

 

Alan Jackson with Edge Autosport