I had spikes too. Ended up changing springs, driving around and seeing what I can hold and spike. I cleaned my WG checked the diaphragm, used compress air n guage and everything to check to make sure my ebc/boost guage was reading right. Heck, I even installed a mechanical boost gauge in line wth my ebc. They read the same. So I just changed the spring. Been good since. I think I posted about it in my build.
YzGyz
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