Yes its a non crushed 1g dsm bov. They should hold atleast 10psi non-crushed is my guess. Should I block off the exit of the bov and see if I boost any more? I do mear my bov vent when I do boost at 2psi. Isn't having the bov 'leak' at idle normal? I thought it was....

 

My experience with this lies within the 2g dsm cars.

Basicly no air is sucked into the motor unless it's coming from the air filter. The air filter then flows past the mass air flow sensor (which meters the air). If air was to sneak in other spots (like the bov) then that would be kinda defeating the cars pre-programmed fuel loop.

I wouldn't crush that BOV, and those things are one of the best out there (much better then that crappy plastic 2g one). To test your theory, block it off with a piece of paper/tape. If you are loosing a big amount of psi (like say 6 pounds - I assume) from a normal operating turbo/wastegate then that piece of paper would be ripped or visibly noticable different. This isn't a proven testing method, but if you want to rule out the BOV malfunctioning.

Does the bov act normal with that typical throaty like woosh when you rev it at idle (while underneath the hood)? Anything else in the charge stream that could be leaking? Maybe the intercooler isn't holding boost? Rule out the intake and you have the exhaust to deal with.

Hope this all helps.

-ryan

 

Stock....tiny exhaust pipes Outta here...get at least somr 2.5" ehxaust pipes...eve a 2" would do it some good

 

Stocker on this car was measured at 2" where I cut it off for the new downpipe. Turbo isn't spinning at idle either. Give it a shot of gas and it starts to spin. A boost leak of that size could be heard but it's not leaking. Spins freely while off but idling there is a lot of resistance.

-Michael

 

why wouldnt you try a boost controller before going and rippin apart the exhaust and ----? hell, just pull the vac line off the wastegate and see if the boost goes past 2psi (but dont let it go much higher) thats ------ retarded to start goin into all that other ---- when it could be somethin as dumb as a wastegate setting. ----, my wastegate is at like 2.5psi actually, why not try somehtin as simple as pulling off a vac line b4 going into other things

 

Problem is not the wastegate. It's been wired shut with no improvement.

-Michael

 

Make sure your turbo manifold is not leaking pressure. Are all the flanges perfectly true? Are you using gaskets made from metal? Make sure your intake isn't blocked. If you're running some kind of filter try taking it off and see if it improves. Lastly, check for leaks in the connectors, in the intercooler, etc.

 

do what dude above said. If you wanna test the bov, just spray some lube in al around the seals and clean off the excess; if it's the bov it'll boost a little higher with thelube.

 

Could be a fucked turbo or a wastegate problem. What do you have for an intake on the turbo??

 

Well SmoothGS has his car now. I disconnected the WG so he can drive it for now. On Wed we'll pull the turbo off and apart. I'd like to wire wheel the exhaust housing before sticking it back together. The downpipe is also leaking but this isn't related to not making any boost.

-Michael