Cannot get this damn thing to work..
When I set it so that I get decent boost ,damn thing spikes
when I set it so it doesn't spike ...Boost is only 1 bar...
On my bleed valve I could set it at 1.3-1.4 bar and it would be on the spike threshold..
tried taking boost pressure directly from turbo..worse spiking !
What am I doing wrong?
Took the device apart ...
it is just a spring and a ball bearing !!
the pressure acts on the ball bearing pushes against the spring until the pressure overcomes the spring and it opens..simple
tried putting some air pressure from a foot pump and it opens as required
There is aalso a small hole " downwind " of the device .I guess this is for pressure release after the device has shut off...
My only thinking is there seems to be an airflow related issue ie there is not enough airflow to the actuator to open the wastegate quickly enough..so the spike has occurred before the boost has decayed..
One thing I have noticed is the cut off is a lot more gentle it is more a hiccup rather than a slam
so what to do ...
my thoughts are to try and make a high airflow design is change all the narrow bore's for larger bore ..especially the last elbow.
this will be available (shortly ) as the ylee dawes device pat pend...
sorted...it was a flow sort of a thing
I put a bigger fitment on the upstream part.. this being a much better fit to the hosing
big cable tie to keep the hose on and bingo..no spiking ..set at 1.4 bar and thats as far as it goes..
My thought is I was losing pressure because of the mismatch in sizes..there is 20 psi on this hose !!
wot a happy man am I
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