Hello everyone, I have a quick question I can't get figured out with endless's searches. Being new here and coming from a rotary, FI and huge hp gains with easy mods are very strange to me. My goal is to keep my car all SPT including suspension tuning down the road, exhaust etc,etc..Right now though I'm starting with an STI air element and a SPT "exhaust system". Is this going to give any performance gain or just sound? I'm into a throaty boxer growl but I'm more focused on a nice whp gain without going too loud. If I have to save for a turbo-back then so be it,(haven't found an SPT turbo-back) also haven't seen an SPT intake just the drop-in, My local service department tells me what I want to hear and claim 10 whp from the drop-in and " SPT exhaust system" I think that could be a line? Thanks in advance all.....this is the noob section right????????