Can't hear DV since fitting FMIC and turbo?

[kineticz]

For some reason the Turbosmart DualPort Kompact can't be heard now since the FMIC and ko3s have been fitted? Any ideas why? The engine does however make a nice whistle sound and gets higher pitch when I put the throttle down which I can only assume is air sucking through the pipes.

DV does make a light tsch under full throttle whereas before it was very loud

 

[Willie]

I dunno anything about this DV but might you have to change a spring or tighten something due to higher boost pressures??

 

[paul-murphys]

have you got a boost gauge as whistle could be boost leaking from the pipes or the intercooler. happened to me an had to get stronger clamps an sorted problem out

 

[paul-murphys]

or may be leaking from turbo make sure everything is tight but sound is boost escaping makes a whistle noise

 

[kineticz]

So this whistling noise isn't air rushing through the pipes? I've got a boost gauge and it's like 0.1 bar lower than what it used to be funnily enough

 

[adam cupra 20vt]

That could be pressure loss from the FMIC?

Where is the valve fitted?

 

[kineticz]

Valve is fitted in the stock location on the TIP

 

[adam cupra 20vt]

Is that dump valve adjustable and have you tried adjusting it?

 

[kineticz]

Yup it's adjustable, I've tried 'softing' i.e. opening it up a third of it's full and made abit of sound difference but not much. Before I only had to adjust it a tad and it was loud. Maybe the pressure loss you spoke about has something to do with it - extra piping means less pressure through the valve diaphragm? I don't know.

I checked all the clamps were extra tight when fitting the intercooler etc.

 

[kineticz]

I'm gonna try tightening all the clips again and maybe shorten the pipes that go into the DV from the turbo outlet, I will get a pic up later to better show what I mean. Maybe the pipes too long, I'm sure I once read it should be as short as possible.

 

[Willie]

Try messing about with the DV settings and see if that makes a difference. Start with the easiest one first.

 

[kineticz]

Easiest one as in... softest?

 

[LEE69]

No easiest as in the DV as it is easier to "sort"

 

[kineticz]

Oh

 

[kineticz]

Turned the DV considerably soft and can hear it nicely again