Howdy, If you remove the FCD you'll have the pleasure off constantly hitting fuel cut, which is bare annoying! The FCD wouldn't be causing you to create any more boost, rather allowing you to go past the built in safety measure (fuel cut) which is around 12/13psi. Chances are, your exhaust and air filter are allowing the turbo to take in/get rid of more air than standard, hence why you're over boosting so badly. But 1.5Bar is quite a lot of creep! Might be a leak somewhere, which is what I'd check for. Also, in regard to an EBC - it is not a definate remedy. With an EBC fitted you would still most likely hit fuel cut/ over boost mate. As has been stated many times, one solution is to port the wastegate, restricting the inlet or exhaust. OR; you could just man up and run 1Bar with supporting mods! lol Just a quick check actually, you definately see 1.5Bar? I don't think the CT9 is even capable of that mate...sure its not 15psi?!