question

[mart1983]

hi all, i have read so many answers for this question.

but what causes turbo chatter?

 

[RsvRob]

It's blade stall on a turbo.
Air flows through it and goes somewhere. So when it has nowhere to go, BOV or dv, then it goes backwards against the flow of the blades ....

 

[rigpig]

It's blade stall on a turbo.
Air flows through it and goes somewhere. So when it has nowhere to go, BOV or dv, then it goes backwards against the flow of the blades ....

+ 1 what he said !!!!

 

[mart1983]

It's blade stall on a turbo.
Air flows through it and goes somewhere. So when it has nowhere to go, BOV or dv, then it goes backwards against the flow of the blades ....

ok, is it best to have an dump valve or not.. cheers mart

 

[RsvRob]

Personal choice. But the evo seems to be smoother and better with a recirc dv

 

[mart1983]

thanks mate...

 

[nitro_uk]

I recently when from VTA bov to recirc, then reversed the recirc valve to give a chatter noise. Sounds awesome and you will notice an increase in power too.

 

[Dimbers]

As far as I'm aware, and I could be wrong, turbo chatter is bad for the turbo.

 

[evo 6 matty]

dont mean to steel the thread but i have a hks bov on my e6 but lately ive started to get the stalling issue and it seems the blow off very early.im thinking of removing it do i need to just buy the forge recirc and fit that?will i get the chatter with that aswell?cheers

 

[GG205rob]

I recently when from VTA bov to recirc, then reversed the recirc valve to give a chatter noise. Sounds awesome and you will notice an increase in power too.

You will not get more power from this unless the valve was previously leaking. However you could get better throttle response which might make it feel quicker?

 

[RsvRob]

You will not get more power from this unless the valve was previously leaking. However you could get better throttle response which might make it feel quicker?

+1
A noticeable increase in power by changing a dv??

 

[RsvRob]

dont mean to steel the thread but i have a hks bov on my e6 but lately ive started to get the stalling issue and it seems the blow off very early.im thinking of removing it do i need to just buy the forge recirc and fit that?will i get the chatter with that aswell?cheers

If it's started dumping early and your getting stalling issues, then the spring has got weaker or you have altered the stiffness. Reset it to harder setting or or replace spring.

 

[RsvRob]

As far as I'm aware, and I could be wrong, turbo chatter is bad for the turbo.

Not particularly bad for the turbo. Prob no more than pops/bangs. The std evo turbos are quiet hardy lol

 

[evo 6 matty]

can you adjust the ssq's?i dont want to run without 1 as im runnning 2.0bar high boost and i know its not good for the tubby :0

 

[RsvRob]

You can run without a dv. Ssqv is not adjustable as far as I know. But you can change the spring for new or stronger one.