Turbo flutter
Thread Starter
Registered User
Joined: Feb 2010
Posts: 1,177
Likes: 0
Turbo flutter
Does anyone get any kind of flutter around 4/5 lbs due to the bov not opening ? I haven't touched my lines on that side all winter and I'm thouroughly confused. I re checked te lines. Nothing is ripped or torn. I took the BOV OFF and spring pressure seems the same (not stuck or anything).
Possible coupler leak could cause this maybe ? Anything besides coupler leak or a dead 1 year old turbo smart race port ? Lol. Again all the lines running around aren't ripped or torn.
Possible coupler leak could cause this maybe ? Anything besides coupler leak or a dead 1 year old turbo smart race port ? Lol. Again all the lines running around aren't ripped or torn.
Registered User
Joined: Oct 2009
Posts: 179
Likes: 1
Sounds like compressor stall at low flow rates. While it's not ideal, it's also not a problem at low pressures and flows. This is one reason why larger turbo setups keep the BOV open under low load conditions.
My car does this under certain conditions. The original setup had the BOV open under all conditions up to and including 70MPH cruise down the highway. The problem, as I discovered, is that the car was quite unresponsive, as boost was being dumped and it took too much time for it to build up.
So, I increased the spring pressure as a "quick fix".
I have other plans for managing the BOV in the future, using a specifically located port in the throttle body. One that the throttle plate uncovers at a certain angle. Done properly, this will work just fine to manage the BOV the way I want. But, yes, I get some of those sounds under low loads.
My car does this under certain conditions. The original setup had the BOV open under all conditions up to and including 70MPH cruise down the highway. The problem, as I discovered, is that the car was quite unresponsive, as boost was being dumped and it took too much time for it to build up.
So, I increased the spring pressure as a "quick fix".
I have other plans for managing the BOV in the future, using a specifically located port in the throttle body. One that the throttle plate uncovers at a certain angle. Done properly, this will work just fine to manage the BOV the way I want. But, yes, I get some of those sounds under low loads.
Thread Starter
Registered User
Joined: Feb 2010
Posts: 1,177
Likes: 0
Sounds like compressor stall at low flow rates. While it's not ideal, it's also not a problem at low pressures and flows. This is one reason why larger turbo setups keep the BOV open under low load conditions.
My car does this under certain conditions. The original setup had the BOV open under all conditions up to and including 70MPH cruise down the highway. The problem, as I discovered, is that the car was quite unresponsive, as boost was being dumped and it took too much time for it to build up.
So, I increased the spring pressure as a "quick fix".
I have other plans for managing the BOV in the future, using a specifically located port in the throttle body. One that the throttle plate uncovers at a certain angle. Done properly, this will work just fine to manage the BOV the way I want. But, yes, I get some of those sounds under low loads.
My car does this under certain conditions. The original setup had the BOV open under all conditions up to and including 70MPH cruise down the highway. The problem, as I discovered, is that the car was quite unresponsive, as boost was being dumped and it took too much time for it to build up.
So, I increased the spring pressure as a "quick fix".
I have other plans for managing the BOV in the future, using a specifically located port in the throttle body. One that the throttle plate uncovers at a certain angle. Done properly, this will work just fine to manage the BOV the way I want. But, yes, I get some of those sounds under low loads.
Registered User
Joined: Dec 2010
Posts: 431
Likes: 4
Id look into a synapse unit.
They hold over 60lbs of boost and have on the the fastest reacting valve. Ideally in a very efficient turbo set up u should be open at idle and cruise to bleed excess boost (like a supercharger)
http://www.youtube.com/watch?v=MU5Y6d9rh1k
see vid
has pretty cool explination
They hold over 60lbs of boost and have on the the fastest reacting valve. Ideally in a very efficient turbo set up u should be open at idle and cruise to bleed excess boost (like a supercharger)
http://www.youtube.com/watch?v=MU5Y6d9rh1k
see vid
has pretty cool explination
Thread
Thread Starter
Forum
Replies
Last Post
