Boost controller problem

[nate_boosted]

I have a manual dual-stage boost controller that looks simalar to the one in the picture below. It was installed by a previous owner and i'm not sure who it's made by. It controlls boost fine but as soon as it starts boosting I can hear air hissing from inside the controller. I'm not sure if this is normal or not. Also I have been having problems with boost leaks ever since i bought the car and have most of them fixed and if I completly unhook the boost controller and cap of the wastegate and the nipple on the j-pipe when i do a blt it leaks down very slowlly but when its hooked up it leaks down within a few seconds and you can hear it leaking from the controller. I've read a few posts where people say It's normal for boost controllers to leak and to block them off when doing a blt but is it supposed to leak a lot? My car is still not running like it should and i can tell it still has a boost leak and now with the colder weather its hitting fuel cut again. Today I unhooked the boost controller and started it and it was idling a lot better and the vacuum was a little better. When i hooked the boost controller back up and started it again it was idling rough again. Does anyone know what could be wrong with it?

 

[4g63oncrack]

yo whats your vac boost gage reading on vacum? and by the way the air you hear out of the boost controler is normal that it regulates boost. have you done a boost leak check and how is the gasket that is in between your intake mainfold and your tbody our cars are notorious for that shitr atleast mine is

 

[AllShallPerish]

It could just be a cheaply made ebay special. Do you have the stock BCS still on the car? If so hook it up and see if your car runs smoother.

 

[nate_boosted]

My vacuum with the controller hooked up is around 18 and when i unhooked it it was around 20. My compression isn't the greatest and I could use some new rings and I might do a rebuild next winter. That's probably part of the reason my vacuum's low. I've done a boost leak check many many many times and just abouthe leaks are fix its mostly just whatever's wrong with this boost controller. I fixed all the leaks around the throttle body including tb shaft seals and biss o ring and it doesn't leak at all around the tb area. I do have the stock bcs on the car but it's all full of dirt and i didn't think it was a good idea to use it if it even still works works. I took it for a ride with the wastegate and the j pipe nipple capped off and it ran a lot smoother and was idling perfect. I bought everything I need to make a homemade boost controller and I was going to try using that since I don't have much money right now but then I found one on nxsmotorsports for only $20 and thats not much more than it cost to make it yourself so I was thinking about doing that instead.