I haven't yet. I don't really know what I need or how to do one. Also, the guy I bought this car from put the engine in himself, and he did a PRVR, AIV, and EGR delete. I've read that you can have a boost leak affiliated with the EGR system. I'm not really too worried with it right now, the engine has all kind of other problems. I have another engine waiting to be swapped in that has 615 injectors, 300deg. fuel rail, and other stuff. Was just wondering if I could just get it running right because I'm not sure when I'll get the engine put in. Know anywhere that has a good guide for a boost leak test? Thanks.