Hello everyone, I have a couple questions that I figured could be answered fairly soon here. I have a 06 Sub Impreza 2.5i. I purchased this car last Dec and I am 18 yrs. old, meaning I would have purchased the STI or WRX but I can't afford the insurance. So here is my situation, I am now looking to do some performance modifications to it. I KNOW SUBARU has created the line of Imprezas to come how they want them to run and tuned them the correct performance stock. BUT I want to put the money into mine to make it run better than it does now. I am looking to install a Greddy catback exhaust onto for the 10+ h.p I will get out of it with the performance sounds as a plus. I also want to install a cold air intake which should make it get a little better mpg plus a couple horses. I am also looking to do an aftermarket turbo install into it but I haven't done much research into that yet. I am wondering if anyone could give me some advice as to what exhaust system would be best for my non turbo engine as of this moment and a nice air intake for a 06. I would greatly appreciate any comments or advice from you. Thanks for your time.