Guest Misc Posted June 29, 2014 Share Posted June 29, 2014 (edited) Hey, Trying to recreate the infamous turbo flutter sound when letting off the throttle. I've read through the various 'BOV' posts from way back and this is what I thought is true : - Sound is caused by air going back into the turbos and making contact with the vanes. - It's called compressor stall (often confused with compressor surge) This process is achieved by removing the BOV. If that's correct, my questions are : - Removal of only the BOV? Or the entire recirculation/dump valve system? - Is the actual squeal chatter achievable on stock twin turbos or only if running high mass single turbo? OR - Have I confused this process with an environment wastgate? I managed to find a video of a Supra without BOV, which sounds nothing like the effect found here using a TIal 50mm BOV So as you can see I am confused - still learning about how to manipulate air flow with turbo setups. Edited June 29, 2014 by Misc (see edit history) Link to comment Share on other sites More sharing options...
gordy.r Posted June 29, 2014 Share Posted June 29, 2014 I get chatter in 2nd gear around the 6k rpm mark when letting off with standard twins and stock recirc valve. Link to comment Share on other sites More sharing options...
Shane Posted June 29, 2014 Share Posted June 29, 2014 Wow!!! You are going to be a legend with that as a first post. Welcome :-) Not intentially, I discovered that when I lost the stock air box and put an large cone filter in the lower cold air duct under the headlight, I ended up with bov sound and chatter, I only have the stock re-circ valve,not an aftermarket. Hope that helps. Link to comment Share on other sites More sharing options...
Steve Posted June 29, 2014 Share Posted June 29, 2014 Wow!!! You are going to be a legend with that as a first post. Welcome :-) Not intentially, I discovered that when I lost the stock air box and put an large cone filter in the lower cold air duct under the headlight, I ended up with bov sound, I only have the stock re-circ valve,not an aftermarket. Hope that helps. It's not their first post Just 3rd account.......... Link to comment Share on other sites More sharing options...
Guest Jason1 Posted June 29, 2014 Share Posted June 29, 2014 I believe the hks ssqv can sound like flutter by changing the insert They do a gold one, I have a purple one on my car and it gives to normal sound. But I believe the gold one is the flutter sound. Link to comment Share on other sites More sharing options...
Shane Posted June 29, 2014 Share Posted June 29, 2014 It's not their first post Just 3rd account.......... Oh....it's not Brad is it? Link to comment Share on other sites More sharing options...
Steve Posted June 29, 2014 Share Posted June 29, 2014 Oh....it's not Brad is it? No, just someone trying to avoid paying membership. Link to comment Share on other sites More sharing options...
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