I'm planning on putting a RMR intake and Tanabe Concept Blue turbo back exhaust with the stock cat on my 06 MR.I wont have the money for a flash for about three month's and im wondering if doing these install's will they cause any problem's with no tune for that long?Any comment's would be helpful.

 

You will be fine...i did TBE, manual boost controller and a fuel pump and i didnt get a reflash for 2 months.