if i recall they all mate up with stock parts so you should be good. you might want to try just running the downpipe first and see how you like it. I am running the ETS 3.5 and the full Corking. I had boost cut issues that we later were able to tune around. Although i see you have the test pipe already installed you might need to reinstall stock one till a tuning is available. By the way, you are going to be pleased with the performance gain from any 3" downpipe. you will want to retain a little back pressure nice mods time for an accesport though. good luck and have fun
