Did not exactly pinpoint it Grant ,could have been two things .I decided to swap my dumpvalve with the one that came with the STI one that came with the STI intercooler,in the end i just swapped the intercooler and dumpvalve.When i was in the process of taking my one off (intercooler ) the hose clips on it did not seem that tight ,so either the hoses or dumpvalve????
Other thing was that my PSI3 monitor was /is not reading boost correctly,Neil came over with a mechanical gauge and it is spot on Mine and Neils thinking is the monitor is only reading output from the ECU and not the piggy back Prodrive have fitted?????So once all my upgrades are done and remaped it should read ok then.......
Kenny