Fuel System/Evap System Readiness...SOLVED!!!

[clark4131]

I'm running a Stage 1 e-tune, but I can't get my fuel system or evap system monitors to reach readiness. I spoke with Cobb, and they thought it might have something to do with my EGR delete. I've also contacted my tuner, but he wasn't sure about the issue. Is there anyone out there running an EGR delete with an AP that has overcome this little snag? I've been running the tune for quite some time, and I have done the proper drive cycles, so I'm wondering if I'm SOL and will just have to do an "undelete" of the EGR. I hope not! Thanks for the help...SC

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[clark4131]

Well, I plugged just the EGR valve back in and that did nothing. I've tried several other tunes, Cobb, MAP, etc., and my Fuel System monitor still won't go in the green. My next step is to completely reinstall the EGR, put the OEM boost controller back in and go back to the factory tune for a while and see if that gets my monitors to reach readiness. If that doesn't work, then it's going to the dealer. I've done a ton of research on the OBD system and the readiness monitors, and I just can't seem to figure this one out, especially since there are a ton of other people out there running Stage 1 tunes with EGR deletes and no I/M issues. Frustrating to say the least...SC

[_brian_]

there's a bunch of driving procedures you need to do before it can be ready, if you're just swapping tunes it will never be ready because that resets the ECU which resets the readiness monitors. a google search will give you a number of driving behaviors to try.

[clark4131]

Originally Posted by _brian_

there's a bunch of driving procedures you need to do before it can be ready, if you're just swapping tunes it will never be ready because that resets the ECU which resets the readiness monitors. a google search will give you a number of driving behaviors to try.

I've been down all those roads. My biggest concern is the Fuel System Readiness monitor. That is considered a "continuous monitor" and does not require drive cycles to reach readiness. Per everything I've read from my state DMV's requirements and the EPA's, it's either good or you've got an issue. You can have one monitor in a "not ready" state, usually the Evap System, and pass smog. If you have a continuous monitor out of ready, even if it's the only one, you fail. This is where I'm having my problems. Cobb and several other tuners felt it was from my EGR delete, but that is now back in the car and working...still no joy. Furthermore, every other person I've corresponded with who has an EGR delete does not have this problem. I'm thinking I'm going to have to see the dealer, which is a nightmare in itself...SC

[clark4131]

Some more interesting info... the Fuel System Monitor activates when the car goes into closed loop. My AP is showing the car going into closed loop almost immediately, but the readiness monitor is still no pinche bueno. I talked to a Subie mechanic who said the AP just might not be picking up the monitor status. Seems kind of unlikely for a $600 piece of hardware...SC

[Sillo]

Mine shows ready. I'm tuned with catted tbe, 3 port, tgv/egr deletes.

[clark4131]

Originally Posted by Sillo

Mine shows ready. I'm tuned with catted tbe, 3 port, tgv/egr deletes.

How long ago did you flash your tune, who was your tuner, and is your Evap System ready?...SC

[Sillo]

Originally Posted by clark4131

How long ago did you flash your tune, who was your tuner, and is your Evap System ready?...SC

April 1st. Tuned by Mikey Botti at EFI Logics. Yeah, I checked a few days ago because I saw a post of yours in another thread.

[Sillo]

[clark4131]

I just threw an O2 sensor code today, P013F: O2 Sensor Delayed Response - Lean to Rich, Bank 1, Sensor 2, so perhaps that's my issue. It could be caused by a number of things, intake or exhaust leak, injector problems, bad fuel pump, tune issues or just a bad O2 sensor. I had my intercooler off this weekend, so I reinstalled it and check everything for potential intake leaks, though I haven't been having any boost issues. My WOT fuel pressure is steady and peaking at around 2100, so I don't think it's fuel delivery system. I haven't messed with the J-pipe, so an exhaust leak is out. I'm actually hoping it's a bad O2 sensor, because that's an easy fix. I have until October of 2017 to figure it all out, so we'll see...SC

[clark4131]

UPDATE!!! UPDATE!!! UPDATE!!!

As it turns out, it was the tune that was causing my readiness monitors to stay in the red. I went with another reputable tuner and we discussed some of the potential issues that could be a likely culprit. What he told me was that many tuners, himself included, toggle off a standard number of CEL codes in their base maps, regardless of your mods or stage, as a sort of template for their tuning. He said he'd toggle off just what I needed for my particular mod list, Stage 1 with EGR and TGV deletes, and we could move on from there if that didn't solve my problem. Well, as luck would have it, from the first map, my problems were solved. Of course, my evap system monitor hasn't set to "ready" yet, but that can take hundreds of miles to get there, and only if you're lucky! I have the updated drive cycle from Subaru, so once I'm completely done with my e-tune, I'll give it a go. So, there you have it, car is tuned, problem is solved and all is right with the world...SC

[Nuked]

That is just laziness on the tuners part. CEL codes for parts that are still active and functioning should be left on so you can be alerted of a problem if something fails. Sure, if you delete the catalytic converter then disable the associated codes. If it still has a stock cat on the car then leave them be.

[_brian_]

that's interesting, that means there is check engine light "activity" even if they are "disabled". part of emissions readiness involves displaying a CEL if something was wrong e.g fuel door is open triggering evap code and CEL. without that code to display readiness just fails silently. let us know if it goes back to ready.

[clark4131]

I understand why tuners would create a "one size fits all" template. It's not necessarily laziness, but rather a bit of business efficiency. I don't fault my original tuner for it, if that is what happened. I have since added more mods that required another tune, I just thought I'd try another tuner who has just as good a reputation, and I was just lucky enough to stumble upon this info during my initial consultation. As far as the readiness monitors go, I'm sure the Evap System will eventually get in the green, it just takes time. Besides, as long as it's the only monitor in the red, I can still pass smog, and that's all I really care about...SC

[gyip12]

Originally Posted by clark4131

I understand why tuners would create a "one size fits all" template. It's not necessarily laziness, but rather a bit of business efficiency. I don't fault my original tuner for it, if that is what happened. I have since added more mods that required another tune, I just thought I'd try another tuner who has just as good a reputation, and I was just lucky enough to stumble upon this info during my initial consultation. As far as the readiness monitors go, I'm sure the Evap System will eventually get in the green, it just takes time. Besides, as long as it's the only monitor in the red, I can still pass smog, and that's all I really care about...SC

Who was the 2nd tuner? I'm having similar problems with no ready O2, egr, fuel, and evap.