I have a full turbo back Turboxs exhaust currently. The TurboXS is rattling and just sounds bad on a new 13 WRX (Dealer and I verified it is not hitting anything and we ran it on the lift and can tell it is in the muffler). The car came with an SPT performance exhaust that looks identical to the TurboXS. I am considering just bolting it back up to the Txs downpipe (if it will fit) and running it until I can figure out if Txs will warranty it. Does anyone know if I will really lose anything between the Txs CBE and the SPT CBE? I am currently running a Cobb stage 2 tune. Would it still work if I used the SPT CBE instead? Sorry if noob questions. New to this. Thanks!