Just to clear this up for anyone still unsure (as I was when it came to ordering and this is the first search result);
I have a late 2007 335i E90 and just fitted a new Helix FMIC and ER charge pipe.
I got the 09+ ER charge pipe (long version) AND got the 09+ Helix FMIC WITH the hard J-Pipe.
You'll see the extra J-Pipe below (available upon request from Helix).
Everything fit perfect and the entire 'cool' side of the FMIC piping is replaced going by this method.
The throttle response is amazing! And am guessing it's due to the whole cool side piping now being solid rather than plastic / rubber.
Hope this helps someone.