i wonder if anybody has tried this.. just thinkin

run a vaccum line from the compressor housing and the intake manifold then t the two lines into the wastegate

the compressor line would reach 7psi but then it would be bled off to the manifold because the manifold isn't 7psi .. but once it reaches 7psi.. it would open the wastegate..

just wondering if that could prevent boost spikes

 

How would that prevent boost spike?

 

im not sure but i dont think that would work. try a tial wastegate. thats ur best bet, they work great!

 

Errrrrrr....

 

well i am not getting boost spike .. just somethin i was thinking about..

i think it would prevent it because it would act like a boost controller..

and i have a tial wastegate

 

How would it "prevent boost spike" any more than running the wastegate right off the intake manifold?

If your wastegate is functioning correctly, nothing you can hook up to the ports of the wastegate can "prevent boost spike" (unless, of course, you are trying to run say 2psi boost on a 7psi wastegate spring... heh).

Actual boost spike is usually caused by improper wastegate placement, the routing of the dump tube, dramatic changes in exhaust size, etc... If the wastegate is open, its job is done. At that point the system needs to have been built in such a way that it is *easier* for exhaust to leave through the wastegate than to leave through the turbine housing/wheel ...

 

you would be getting feedback from the compressor housing also..

just a theory..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pv2dickman &raquo;</TD></TR><TR><TD CLASS="quote">you would be getting feedback from the compressor housing also..

just a theory.. </TD></TR></TABLE>

The wastegate actuator is going to open as soon as it starts getting pressure. If you tee the actuator to the compressor housing and intake manifold, it will still run off of the compressor housing source because it is closer to WG. The compressor housing gets boost to the wastegate faster then the intake manifold does.

I would think that doing this might actually cause trouble with your vacuum readings. By teeing the intake manifold with the compressor housing you are creating a vacuum leak in the intake manifold. When the throttle plate is closed whether it be at idle or after a shift the intake manifold would be at vacuum. But with a tee going to an atmospheric or slightly pressurized source (the compressor housing) you are purposely creating a way for vacuum to escape so your vacuum readings would be thrown off.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">
I would think that doing this might actually cause trouble with your vacuum readings. By teeing the intake manifold with the compressor housing you are creating a vacuum leak in the intake manifold. When the throttle plate is closed whether it be at idle or after a shift the intake manifold would be at vacuum. But with a tee going to an atmospheric or slightly pressurized source (the compressor housing) you are purposely creating a way for vacuum to escape so your vacuum readings would be thrown off.
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ok.. i guess that sums it up .. haha

 

It doesn't hurt anything to suggest new ideas though.. so good job for thinking outside the box.

&lt;-- slaps himself for trying to be nice

 

turboed my car today.. it don't matter though cause i have an oil leak to fix