prodrive boost control solenoid - does it work for us?

[denver_whitest185]

so, my boost control solenoid isn't working. i was looking around and found this. would this work on a turbo legacy?
on the prodrive America website, it says all turbo models
http://www.prodriveamerica.com/ProductPages/3port.htm
http://www.flatironstuning.com/shop/p-1 ... enoid.aspx

thanks
-Ted

[vrg3]

It also says that the duty cycle will have to be retuned; you don't have the means to retune your boost control solenoid duty cycle.

If I were in your shoes I'd just scrap the stock boost control system altogether and go to an MBC.

[ciper]

Or EBC. Some of the old units work just fine but sell for less because the WRX guys want the newest fancy one.

[denver_whitest185]

It also says that the duty cycle will have to be retuned; you don't have the means to retune your boost control solenoid duty cycle.

If I were in your shoes I'd just scrap the stock boost control system altogether and go to an MBC.

the only problem with that is that would put me in street modified SCCA solo class. where i would get creamed. if its a stock or stockish boost control system, then i can still stay in STX (technically, i would need to be in STU, but no one would really care unless i was winning)

however, i didn't notice the part about tuning it. i guess that would be a problem since i really can't tune it like the way wrx guys can. i guess i'll just stick with a stock unit. it was just an idea.

[ciper]

Hmm. Does it mean that the duty cycle needed is higher for the same function?

[ciper]

Look at this http://forums.nasioc.com/forums/showthr ... ?t=1378811

[denver_whitest185]

interesting. looking at the perrin site, i found this

http://www.perrinperformance.com/shared ... int720.pdf

[Arctic Assassian]

So what does this allow you to do exactly? how does it differ from the stock setup for someone like me with factory EM?

[mgroshong]

my guess is it being tunable is one plus, it is build more heavy duty also.

[Legacy777]

Our cars already utilize a solenoid like the perrin & prodrive.

You have to understand that the newer subarus use a bleed type setup. The compressor outlet is connected directly to the wastegate actuator with a tee in that line. The stock solenoid then bleeds pressure off.

On our cars, the compressor outlet goes to the boost control solenoid, and then to the wastegate actuator.

I'm pretty sure that the stock tleg ECU will bleed pressure off into the intake resonator, and not allow the wastegate actuator to see boost pressure until it gets close to boost limit. This keeps the wastegate closed longer compared to the bleed setup.

The perrin & prodrive solenoids do the exact same thing.

The only thing I can't say for sure, or could possibly be improved upon is how the ECU controls the solenoid, and how soon it starts letting the wastegate actuator see boost pressure.

Vikash's vacuum diagram for reference
http://www.graphics.cornell.edu/~v/vacu ... vacuum.png

Questions/comments?