I had the exact same symptoms, pull that Greddy off and look inside. For most people it's about a 5 minute job. I think it's intermittent because the seal is only open sometimes the rubber is still there it's just not sealing all the time.

 

sells replacement diaphragms for about $80 but the same thing will happen again, for me that wasn't an option meth rips that thing up in no time.

don't 'lean' ..... fall, 99% sure that's the problem.

 

I just pulled the top of the Greddy BOV off and saw I have about an inch rip in the rubber seal. I guess then that's probably my issue. Crap!! Oh well, I guess it did it's job well for quite some time with the amount of boost I've been running!

Thanks for your help!

 

Nice, looked like you nailed the problem, good job guys.

 

that just might be your ""issue""

You can just throw a condom over the top of the diaphragm but it's a very temp fix.

 

Mike,

After I got off the phone wiht you this morning and told you about the tial. I realized I have a complete band new upper ic pipe here with a tial welded onto it already for a customer who decided not to take it. Let me know if you are interested in it.

 

same thing happened to my RS BOV at 30 psi...They're a great valve, just the rubber portion of the diaphragm doesn't hold up.