I really don't think I have a problem with spiking now. But when I first got my mbc (cheap one off of ebay - pretty much a home depot one) I had a heck of a lot of problems getting it set. It spike bad also - quite a few lbs over. Anyway after taking it apart and looking it over I figured the bleeder hole was too big. I soldered over there hole - 1/16" and drilled in my hole - think it was about .025". (I also preset it with an air compressor and regulator.) Now I can't really see a spike. It goes to maximum boost and dies down as I would expect from 9b's.
Anyway the Logs are not that great - I just took what I had saved locally. The first three are wot runs - not sure what gear - you can see the rpm range. The last one is to show you the knock I am getting off and on. Notice I am running 14.5 peak with no knock and when I slowly accellerate I get knock - see the boost at <0. Still anoying.
