If I Recall Correctly
I have synapse BOV & JB4 as well. If I push in the clutch at 6500 there is a brief "psst" before the BOV closes holding boost. If I then shift to neutral and release the clutch it will continue to "psst" or if I shift the the next gear it will retain some of the boost.
When this first happened to be I did some research and IIRC there was a setting that controlled this on the JB4.
Originally Posted by SCSRe92
whats IIRC? im sorry im just becoming familiarized with jb4, so its normal?
I think it is the "bogfix" in this picture.
2008 335I E92, AW, VFF700, 18" Forgestar F14, M3 front/side, M-tech rear, AMS IC, H&R Touring Cup Kit suspension, HID AE, ER Charge Pipe & Synapse BOV, CIC Retrofit, Quafie, DSS, Defiv Lockdown, SPEC 2+/Steel SMFW, Walbro 450