Just got done putting it in and after a trip to Home Depot, a performance shop for high pressure hose, and $30, its working perfectly.. Heres some pics. If you have any questions feel free to ask! Its not the cleanest job i have done, but ill clean it up after i play with it a bit.

 

Isn't the gauge hard to read when you're driving? Haha j/k. Did you just use a needle valve?

Andy

 

i couldnt find a needle valve with a high enough max PSI, so i just used a ball valve. Yeah the guage is pointless but i didnt have anything to plug the hole with so i just left it, for now.

 

how does this fool anything? I must be missing something here.

Also, why would you need "high pressure hose" for this item, regular fuel hose takes the pressure easily doesn't it?

I built a pressure regulator with vent similiar to what you have which doesn't open until a preset pressure, like 35-or 40 psi is reached, then when the boost is gone, like lifting off the throttle, the regulator closes and the vent takes care of the wastegate pressure so it closes.

Less than $10.00 in parts and used fuel hose.

 

Its not really fooling anything. This is purely mechanical and restricts air flow to the wastegate so it doesnt open completely as quickly. I was at 38ish PSI before this mod and now im at 48ish almost 50 PSI

 

They have inline boost controllers at www.boostcontroller.com.

 

Yeah i saw that site, the cheapest one they have is like $75 plus shipping. I made mine in , total work hours=1 and for $30

 

I took a brass elbow ( free from work ) and drilled it and tapped it. Installed an allen screw ( plenty laying around at work as well! ) in the newly tapped hole that will close off the passage variably, and there you have it! A FREE adjustable boost controller!

 

I did the same, just used the stock elbow though. I think my total cost was .05 for the set screw.

 

and at what PSI do we need to start thinking about some head studs???

 

i have been told around 55PSI, Everyone seems to say im safe at 50PSI

 

i was going to do the elbow aslo but i wasnt sure about how and what size screw and something about a bleed hole???? Plus this easy to adjust without getting my hands dirty...lol

 

You guys haven't changed the WG opening point-- it will just open slower at the same pressure.

Unless your set screw is bleeding off boost (like a boost elbow creates a small boost leak), you won't change the pressure, just the rate.

You mod increases the opposition to FLOW-- not the opposition to PRESSURE, which is why it is ineffective as a boost controller.

JMO

Høhn

 

Well.....after several weeks....mine ended up just screwed all the way in. Tops off at about 35 psi. Good enough for me, I guess.

 

HOHN is right tho, the screw just delays how long it takes for the arm to open, not at how much pressure, unless the bleed hole is there.