Th3Franz Posted April 21, 2017 Share Posted April 21, 2017 I ran a FMIC with a Forge BPV and then a Tial atmospheric. That sounds to me like the Forge when it was cycling open/closed to divert the pressure away. With a FMIC, you have more volume of pressurized air, so it can cause this behavior. Your video sounds fine to me. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
oODanKNesSOo Posted April 21, 2017 Share Posted April 21, 2017 You don't think it sounds exactly like the gobble in the video of compressor surge? I threw on a turbosmart hybrid bov.. I think it's 50/50. Now it works perfectly during full boost/ WOT... however, I will get chirps and rarely a gobble/ doodoodoo under light boost and normal driving. I keep hearing it's no big deal, so I suppose I don't have to run out and by a GFB TMS response... however, the advantages listed above are definitely intriguing! Link to comment Share on other sites More sharing options...
Rhitter Posted April 21, 2017 Share Posted April 21, 2017 It sounds nothing like the video that bnguyenbb6 posted of true compressor surge My OBXT build Link to comment Share on other sites More sharing options...
oODanKNesSOo Posted April 21, 2017 Share Posted April 21, 2017 It sounds nothing like the video that bnguyenbb6 posted of true compressor surge Oh, thank goodness it doesn't! That would certainly ruin my weekend!!! Lol My fault, I was definitely referring to the video posted by M Spank at the top of this page... the "flutter" sound, not the stalling, giving up on life sound in bnguyenbb6's video. Sorry for not being more specific. Link to comment Share on other sites More sharing options...
Th3Franz Posted April 22, 2017 Share Posted April 22, 2017 In my experience a BOV/BPV will "flutter" more with a stiffer spring. The advantage is that it will not crack open during spool-up and it will also not open as easily at low boost (differential), like you might be experiencing. The best solution is to run more preload so that it opens fully at high enough pressure differential but does not open too easily. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
oODanKNesSOo Posted April 23, 2017 Share Posted April 23, 2017 Spot on bro... I like what's posted here about gfb, not leaking under boost... the adjustable pre-load and venting options are what I need, but the ease in which the TMS response does this is awesome. Really like the turn of an Allen wrench design over taking it apart and cutting springs method. "Tuning your bov/ bpv" is something I didn't really understand until now that I need to have one I can tune. Link to comment Share on other sites More sharing options...
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