I have an Infiniti G35 I am thinking of introducing a down pipe and ultimately headers and y pipe . Simply how much horse powers you're thinking that I'll get? And Exactly what are the advantages? I have an 08 mazdaspeed three, Use a cobb v3 accessport by using a https://downpipe98531.wikikarts.com/942801/detailed_notes_on_m3_g80_downpipe