a98pmalcolm Posted July 13, 2011 Share Posted July 13, 2011 (edited) Please Watch Vid: pRj9YjGxy3k Any Ideas why the change in sound? Id love it to always be the louder fluttery sound. I know that not good for the tubo but at higher boost the flutter isnt there so it should be pretty safe. Edited July 13, 2011 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted July 13, 2011 Author Share Posted July 13, 2011 Any ideas? Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted July 14, 2011 Share Posted July 14, 2011 This also happens with mine at low rpm but i always thought it was because i had 2 dump valves. Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted July 14, 2011 Author Share Posted July 14, 2011 (edited) Hmmm its strange. Id love to know why it does it so i can set it up to do it all the time is it sounds ubber cool. idea i had is both wastegates are closed at low revs making alot of boost causing more of a woosh and flutter as both will be fluttering? Beeing a very tempramental fault within the VSV system. If that is the case is there a way of using bypass's with IAVC, VSV etc.. For example with the TTC mod, thats when both wastegates are open until the 3000RPM mark then they close up for the turbos to spool. Untill the set max boost peaks. (I maybe totally wrong lol) If im correct in the way that works, is there away to have both wastegates closed all he time untill the controller opens the wastegates up at 1.2 bar as its set now? I could be talking complete nonsense so appologys in advance if i am... Any thoughts? Edited July 14, 2011 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
Suprab1 Posted July 14, 2011 Share Posted July 14, 2011 I think it sounds very like turbo chatter on a single turbo. Sorry i can't help with the rest but maybe someone will know the sound i mean. Quote Link to comment Share on other sites More sharing options...
marbleapple Posted July 15, 2011 Share Posted July 15, 2011 I was on eBay last night and noted that Sumo power did inserts for HKS BOVs to change the pitch of the noise. they might be someone to speak to about making the noise permanent but if you can buy inserts from Sumo perhaps the insert that comes with the BOV has come loose? Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted July 15, 2011 Author Share Posted July 15, 2011 Hi marbleapple. Yer i have the inserts, Theres a purple one thats make its a lower dump... The gold one is the same as the silver one but looks more fancy.. Quote Link to comment Share on other sites More sharing options...
Lude Posted July 17, 2011 Share Posted July 17, 2011 i have this on mine, basically, the chatter noise is from the air filter, not the dump valve. the other sharp noise is from the SSQV. small amounts of boost will get the filter noise/chatter, higher boost you get the SSQV Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted July 19, 2011 Author Share Posted July 19, 2011 (edited) Lude its not as easy to notice in this vidio but there was deffo catter coming back through the BOV once it opened.. But also from the filter as its passing the turbo fins (for it to make the noise) The high pitch woosh from BOV is also 4 times louder when this happens Any more ideas why it randomly does this (very rearly)? Edited July 19, 2011 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
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