EGR valave or O2 sesnors?

[Jeffman]

You could try to reset all adaptations and “other modules” in MHD.

 

[Jeffman]

Your first log listed above looks really good. I don’t see any obvious problems. ???

 

[fmorelli]

It is the other way around, adds exhaust gaz to intake air by opening the intake valves while the cylinder pressure is still a little bit higher than intake pressure. At least if i remember correctly, it is also what burns the oil and turns it into carbon deposit.

I looked it up and it's this.

Hmmm wouldn't it be nice to have this coded out ...

I'll switch back to factory map tonight and see what happens.

Sounds good. One other thing when you post back, which I thought of as I was looking at the logs, can you tell us about how the car behaves when driving?

[EDIT: we both posted at the same time. I see you went back to stock with no change in behavior.]

Filippo

 

[The Convert]

Hmmm wouldn't it be nice to have this coded out ...


Sounds good. One other thing when you post back, which I thought of as I was looking at the logs, can you tell us about how the car behaves when driving?

[EDIT: we both posted at the same time. I see you went back to stock with no change in behavior.]

Filippo

You should be able to "code it out" by adjusting the valve overlap to open the intake valve a little later.

 

[Sixbanger]

Hmmm wouldn't it be nice to have this coded out ...


Sounds good. One other thing when you post back, which I thought of as I was looking at the logs, can you tell us about how the car behaves when driving?

[EDIT: we both posted at the same time. I see you went back to stock with no change in behavior.]

Filippo

Car sometimes feels jerky (intermittently) ,fuel vapors at idle, not much low end power, and gas milage is terrible. I'm more than likely just going to bring it back to the mechanic. I can't deal with this anymore.

 

[NoQuarter]

This is a frustrating case for sure. Takes a lot of personal energy to deal with something like that has no "fun" factor.

Keep this thread alive and let us know how it turns out.

 

[Sixbanger]

This is a frustrating case for sure. Takes a lot of personal energy to deal with something like that has no "fun" factor.

Keep this thread alive and let us know how it turns out.

I just listened to Noquarter : ) I definitely will.

 

[Sixbanger]

Brought my car in at 7am today. Mechanic at Redline said my car was good, no leaks or anything that needs attention right away. The only thing he found wrong were the downpipes were a little loose coming from the back of the turbos. I raised concern about the black carbon on the plugs and he said all n54s do that. I bought new 95770's last Saturday. Fuel smell was exhaust gases due to no cats on downpipes. However, with 114,000 miles on the original turbos, they will need my attention very very soon. On stock map, the wastegates rattle like crazy. Thank you all for your help.

 

[NoQuarter]

You didn't know you had no cats? Or just didn't know to expect a smell?

 

[Sixbanger]

You didn't know you had no cats? Or just didn't know to expect a smell?

Didn't expect the fumes to be soo strong.

 

[EthanolTurbo]

Didn't expect the fumes to be soo strong.

If you run a decent E85 blend it will reduce the fumes significantly and make them smell good. One of the many benefits of corn juice.