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Discussion Starter · #1 ·
i am going to be ordering the mbc+a in a few days i currently have the forge bov with the green spring which goes up to 15 psi, if i am going to be setting the boost to 15 psi should i upgrade the spring to the next set up which starts at 15 psi or keep the same?
 

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I actually have about the same set up as you are going to have. I have tried about 3 different springs and I think using just the green spring is fine. You shouldnt have any problem with holding max boost and there is the least possibility of any compressor surge with the lighter spring. Having the lighter spring makes the bov shoot off more often and for longer duration, as opposed to the blue or yellow springs.
 
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