[Charleston335]

Just got a call from my SA and she said reason why CEL was on is due to a bad blow-off valve. I've been running the JB Stage 1 for a month now but I havent heard of anyone having this issue?

[onebadmofo]

Do you have an aftermarket blow-off valve?

[E90Company]

Originally Posted by onebadmofo

Do you have an aftermarket blow-off valve?

N55's have a BOV built in the turbo

[onebadmofo]

Oops, didn't check what forum I was in or what car the OP had

[madmanhiker]

Pg 65

ST916 - N55 Engine.pdf

[Charleston335]

Does this issue hurt performance?

[Charleston335]

Originally Posted by madmanhiker

Pg 55

ST916 - N55 Engine.pdf

Page 55 is vibration dampener?

[Charleston335]

Originally Posted by E90Company

N55's have a BOV built in the turbo

Then they have to replace the turbo? I'll have to look at the print out when I go pick it up in an hour.

[E90Company]

Originally Posted by Charleston335

Then they have to replace the turbo? I'll have to look at the print out when I go pick it up in an hour.

I don't know alot about the N55, but I would assume they may have to replace the turbo because the BOV is built into the turbine housing. That's good for you if you are under warranty.

[Charleston335]

Originally Posted by E90Company

I don't know alot about the N55, but I would assume they may have to replace the turbo because the BOV is built into the turbine housing. That's good for you if you are under warranty.

Weird because she said they just ordered only the blow-off. I read somewhere its a common code and should be cleared but i kept getting it. Would that hurt performance any? I didn't get the code when I took the tune off...

[E90Company]

Originally Posted by Charleston335

Weird because she said they just ordered only the blow-off. I read somewhere its a common code and should be cleared but i kept getting it. Would that hurt performance any? I didn't get the code when I took the tune off...

Like I said I'm not too familiar with the N55, but it may be a seperate part that you can replace on the turbo. If your BOV was leaking and throwing an underboost code, yes that would hurt performance

[madmanhiker]

Originally Posted by Charleston335

Page 55 is vibration dampener?

sry, pg 65 Exhaust manifold. It's all there in the document.........

[BMW_Belgier]

Originally Posted by madmanhiker

sry, pg 65 Exhaust manifold. It's all there in the document.........

That document is really impressive

[Dark_Knight_335]

Originally Posted by E90Company

N55's have a BOV built in the turbo

So that's what that noise is!
I thought I was imagining things when I heard that.

[SflBimmer8484]

My Bov sticks when doing highway runs and a cel pops up. You do not need to replace the turbo just unscrew the old one and pop in the new one. Labor is around 2 hours.

Number #9 http://realoem.com/bmw/showparts.do?...73&hg=11&fg=50

[Charleston335]

Would that cause overboost?