Well I replaced all the vacuum lines today and its still f'ed up. I don't think I was leaking before as its happened 3 times and everytime things went back to normal. Just not this time. Also, I am sorry but I cannot afford a new BC right now. I could possibly get a dual stage manual, but I don't have the $$$ for the ones you mentioned. I dropped all my cash into this car.

Also, I was run 10psi max before this happened. It used to build boost and hold at 10psi with not spiking at all. Now it just steadily climbs up. Let me know when is a good time for you as I would gladly appreciate your help. It may be something easy to see for somebody familiar with these cars. I am new to the MR2 and bought this one modified so I am clueless. Thanks