yes blow off valve is working we found that we got 15lb in hat but no boost below the blades. the wierd thing is that it was working it made 928 to the wheels then we found that the fuel pressure was increasing in vacuum so now we think the return line is to small and the fuel voulem is to much procharger says fuel will eat boost so we are going to dash 10 return ill let you no if that workes thank you if you think of any thing else please let me no thank you [ larry]