[mex2309]

I'm still in under CPO and going to take it to the dealer.
I currently have a JB4 and will take it out before, however I read I should clear the codes before I remove it so the dealer doesn't know I have a tune.
Will I have to wait for the Engine Fault light to appear (30FF) again so the dealer can trace the cause of the code?

[335NJ]

Originally Posted by mex2309

I'm still in under CPO and going to take it to the dealer.
I currently have a JB4 and will take it out before, however I read I should clear the codes before I remove it so the dealer doesn't know I have a tune.
Will I have to wait for the Engine Fault light to appear (30FF) again so the dealer can trace the cause of the code?

Have you checked the typical things? Chargepipe connection?

[mex2309]

Yes- The end of my OEM charge pipe looks intact, I didn't see any cracks anywhere.
HOWEVER. One of the Bypass valves has oily grimmy film all around it. I disconnected from the pipe and it also has some oil inside.
How does this happen and where is it coming from???

[335NJ]

Oil blow by, a catch can will decrease that. Although there appears to be quite a bit, but i'm only comparing that to my car, so it may actually be perfectly fine (That amount of oil).

[BoostedE90]

That definitely doesn't look like a normal amount of blow by. Looking at the 2nd pic your front diverter valve could be gummed up and not closing properly. But I would be more concerned as to why there is an abnormal amount of oil in your intake tract.

[335NJ]

I'd start by replacing th PCV with the RB one, and also a catch can. If you still have a lot of blow by then I'd say the turbos are the culprit.

[jkrig]

Could be a bad vacum/boost solenoid line as well, simple to check and repair....

[Gizm0]

Could be a bunch of things...

- Vacuum line leak
- Faulty boost solenoid
- Wastegate not opening/closing properly due to worn out wastegate bearing
- Boost leak from cracked charge pipe or air duct between the turbo and the IM

Thankfully you are still covered. Keep us posted.

[lawwailok]

could be this too:

http://www.e90post.com/forums/showthread.php?t=1050969

that happened to me 2 weeks ago.

[mex2309]

Originally Posted by lawwailok

could be this too:

http://www.e90post.com/forums/showthread.php?t=1050969

that happened to me 2 weeks ago.

Yes, it could be that too. How'd did you clean the TMAP sensor?

For 3 straigtht days I've noticed when the car is not warmed up and I speed up (not even close to WOT), I get the light. Even on map 0 on JB4.

[proTUNING Freaks]

If you're seeing oil film around your DVs on the charge pipe then you've got your issue solved. Your diverter valves are most likely faulty/leaking. I'd look into an aftermarket charge pipe that retains the OEM c-clip connection to the throttle body. Weather you go aftermarket DVs or BOV is a matter of personal taste. Our recommendation is to stay with DVs and recirculate.

Dzenno@PTF

[lawwailok]

Originally Posted by mex2309

Yes, it could be that too. How'd did you clean the TMAP sensor?

For 3 straigtht days I've noticed when the car is not warmed up and I speed up (not even close to WOT), I get the light. Even on map 0 on JB4.

my old TMAP has been cleaned a few times with brake cleaner, this time i went out to stealership and bought a new TMAP and just swapped it out.

[mex2309]

Waiting around for dealership appt. In preparation a couple of days ago, I removed JB4, and dual cone intake. Guess What? I Can't trigger the stupid 30FF code.

I had a PTF tune before and never got a code. I install the JB4 I get a code.
Remove it, no code. What's up w/ the JB4?

[Boost'n E92]

Originally Posted by mex2309

Waiting around for dealership appt. In preparation a couple of days ago, I removed JB4, and dual cone intake. Guess What? I Can't trigger the stupid 30FF code.

I had a PTF tune before and never got a code. I install the JB4 I get a code.
Remove it, no code. What's up w/ the JB4?

I took my car out 3 times to the track, first time all good, second time got the 30ff, last too times i was using cobb, between the first and second time I added a bms occ, it was the second trip that I got the 30ff, and well yesterday I got it again, but this time I was using the jb4 g5!!! and the first 3 runs car ran slow like 13.5, checked my map it was on 3, reset it to map 5 then kicked it to 4 every time I launched reset it about 4 time, on my second run is when I got the engine malfunction, on my 5 run or so, car ran perfect hit a 12.8, it stayed it map 5 last run of the day map 5 at my launch it went to map 4 again, have a felling i am getting what mr. law is getting, so I would say jb4 isn't the issue, since I experienced with both cobb and jb4. Gl man

[Jnat]

My issue right now, JB4 equals no 30FF. Installed Cobb and have 30FF. If JB ISO is not a pass through on map 0 that may be my problem so today I installed back end flash and ran customer JB map 6, no 30FF so I know it's not mechanical.