hokiruu is right! Especially around my area, the weather and pressure are constantly changing. I had a proboost mbc on my vr4 and loved it. I then installed a blitz dsbc and loved it even more. If you play around with the boost and gain you can get it to spool quicker and hold boost longer.

 

Thanks VWJeff. I've tried about every boost controller there is, between my own cars and the dyno. I have to say the new inline controller we have is the best I have used. We use a ceramic ball, billet aluminum anodized body and a stainless steel spring.