[austinjsb8]

Hey guys, I am not too handy when it comes to diagnosing and fixing engine problems, so I am hoping to find a reputable shop in the Bay Area, preferably east bay, to look into a possible boost leak issue. I have an 08 335i with a JB4 tune but otherwise stock. I've been getting a reduced power engine limp message consistently when I take the rpms past 4500 or so. I get the same message on map 0 or 1. I run the car normally on Map 1. Pulled the code with the JB4 and it gave me 30FF. Learning message disappears once the car is turned off.

Any advice on a shop or mechanic to help diagnose and fix this issue appreciated!

[Simple5]

You have a boost leak somewhere:

Read this: http://www.e90post.com/forums/showth...highlight=30ff

[AnthonyT]

If you can and are willing id go to Santa Clara and go to Motorspeed West. Great work and great price!

[EuroKar]

Originally Posted by austinjsb8

Hey guys, I am not too handy when it comes to diagnosing and fixing engine problems, so I am hoping to find a reputable shop in the Bay Area, preferably east bay, to look into a possible boost leak issue. I have an 08 335i with a JB4 tune but otherwise stock. I've been getting a reduced power engine limp message consistently when I take the rpms past 4500 or so. I get the same message on map 0 or 1. I run the car normally on Map 1. Pulled the code with the JB4 and it gave me 30FF. Learning message disappears once the car is turned off.

Any advice on a shop or mechanic to help diagnose and fix this issue appreciated!

Replace your vacuum lines !
I just did this repair and I have seen many done for the same code. The dealership will try to charge you around $500. You can do it yourself in about 2-3 hours max.
It is easy if you need help send me a message.

[austinjsb8]

Thanks for the advice guys! I will try and replace the hoses myself. Appreciate the help.

[BeeMuh]

Originally Posted by austinjsb8

Hey guys, I am not too handy when it comes to diagnosing and fixing engine problems, so I am hoping to find a reputable shop in the Bay Area, preferably east bay, to look into a possible boost leak issue. I have an 08 335i with a JB4 tune but otherwise stock. I've been getting a reduced power engine limp message consistently when I take the rpms past 4500 or so. I get the same message on map 0 or 1. I run the car normally on Map 1. Pulled the code with the JB4 and it gave me 30FF. Learning message disappears once the car is turned off.

Any advice on a shop or mechanic to help diagnose and fix this issue appreciated!

I got the same issue. Somewhere between 4-5k RPM and I get the picture of an orange engine icon. Luckily, I'm still under warranty.

[austinjsb8]

Once I replace the hoses I will report back.