I checked the plug and that is fine.. I know it wont build much, but it does build a small amount. My last twin turbo 300 had hks blow off valves and I had my friend rev it one day with my hands in front of them and I was extremely impressed with how hard it blew my hands back. My cousin, who from experience has a very good knowledge of turbo cars, said the turbos are not moving and this is because the wastgates are not opening up. But he still had his church clothes on and his wife was ready to go home so he couldn't stay to help. I never put more than 5psi in the system with the air hose. Have I either knocked out a hose that controls the wastgates or have I tripped some kind of safety that now wont let the wastgates move?