Power Fc Boost Control, Plus Valve...

[Bass Junky]

hey ppls.

I've been thinking lately about modifying my PowerFC boost kit to add one of those valves from the Autospeed Boost control kit which will hold the wastegate closed until a certain psi and then allow it to open.

Like a cracking pressure.

my question is can I integrate one of these valves into a PFC boost kit to allow psi to rise quicker?

I'm thinking I could simply plumb it in and see how it goes first.

maybe a little tuning of the gain on the PFC might be required, but I figure it should work.

Anyone got any ideas?

BASS OUT

[Bass Junky]

Anyone?

[Sydneykid]

Interesting approach.

It take it from the fact that you posted the question that you think you are getting some wastegate creep as the wastegate actuator is fed pressure prior to the target boost level being reached. The way I test for that is to wire lock the wastegate closed and give it a quick run up on the dyno. Only until the target boost is reached of course, you don’t want rampant uncontrolled boost. That gives you the best possible boost build curve. Then compare that to the boost curve you get with the PFC BCK running the wastegate actuator.

That will prevent you from chasing something that isn’t there to be had.

There is nothing I can see wrong with the theory of using the Autospeed pressure limiting valve to limit airflow at anything lower than the target boost level. Just make sure you are not wasting your time first.

cheers

[mokompri]

does the PFC's boost control setup have configurable duty cycle maps to control boost ?

if it does, then you could simply hook up the PFC solenoid in series like the jaycar IEBC setup, rather then in parallel, and then effectively have an electronically configurable version of that valve you are trying to implement, to avoid any boost creep at all.

[Roy]

How does the Autspeed jobbie work? Doesnt it use a regulator and a relief/bleed valve? The relief valve cracks at a certain pressure , anc once cracked the regulator bleeds off air to allow the std wastegate to open?????

You are effectively putting a relief valve on a relief valve....and i suspect the Apexi solenoid may struggle not to spike the boost when the Norgen whatever valve cracks open?!?!?

[Bass Junky]

I think the PFC kit is in series now, but it doesn't hold the gate shut, just bleeds off air when required, so up to wastegate pressure, you get normal response.

After that you can enter a gain amount, which alters boost ramp, and it you set it too aggressively, you get spike.

PFC kit also has it's own learning curve thing.

I reckon I could set the uty really high so it bleeds off heaps on the ramp up, but just not give it the air that it thinks it's getting until the valve cracks open.

Duty high, boost stablizes very quickly.

maybe