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Hey Al I put a full 3inch system with a slght offset muff(not one of those round ones the young blokes put on thier cars) from the rear cat were the two down pipes join back on my H6 outback cost me 400 big ones & it sounds heaps sweet & not load goes a little quicker but not much. k&n filter makes it breath a litte easyer but only a very light on it to much & it can put a slight film over your airflow meter it can send incorrect signal back to the ecu. cheers hope it helps ya out. cheersWhats the best exhaust size pipe and muffler combination you guys have used on this car . Im getting alot of fitters saying different things about back pressures and noise levels. I just want a nice sound nothing loud . Has anyone here done this to there H6
2006 liberty 3.0R-B Auto
