[akahn221]

Hey guys, this is my first post due to the fact that I finally cannot find an answer to one of my questions. Accidentally posted in S55 section as well.

About a month ago I installed VRSF 5" stepped intercooler and their catless downpipe on my MY17 LBB M2.

Had a big boost leak at first but fixed it by getting the clamps on correctly. These days my check engine light is coming on and reading code P120D and I have a feeling it has something to do with a boost leak because I do not have an aftermarket air intake just the K&N air filter.

Now my question is, when you folks were Installing a VRSF intercooler did you use any couplers or O rings? I still feel like I'm leaking in the higher rpms. I just can't figure out what exactly it could be. Wanted to ask around first before I spend money on a smoke test that probably won't do me much.

Let me know what you folks have done if you have been in this situation!

I am MHD stage 2+

Thank you!