[wihaM5]

So I just got my 550i and it's a blank slate I've had a 325i e49 and a e90 335i previously. So I'm not completely new to BMWs. I just did colder plugs and all new Delphi coils. Plus did new crankcase vacuum kit as well.
I'd like to go catless and intake next. But I relies that when going catless it throws a evap code will it effect me to run with the code for a bit or is there any way to keep the code cleared besides getting jb4 at the same time.
Then at minimum I'd like to do best meth kit for the car and will need to get charge pipes to run it and would do jb4 and tune at this time. Because I'll need the jb4 to further assist my meth kit. When to spray and all that? Because correct me if I'm wrong I've been told you can run into issues with meth kit if it is not working in correlation with a tune?
Then lastly and maybe most importantly does anyone know if I can use or anyone has used the m5 turbo air coolers with the n63. Could I do a custom type of setup with the different charge pipe sizes and or other hoses that connect? Cause aftermarket coolers for the n63 are like 3k and the m5 ones are way larger and better and you can get nice used ones for a fraction of the cost?