Jack – Don’t buy a downpipe unless the maker delivers a HP raise estimate plus a dyno chart. I've a Lancer ex GT-A 2010 model, is it right to put a downpipe? I intend to make it louder, i currently put in a muffler. I don't have any turbo tho. https://catlessvscatteddownpipe97631.evawiki.com/8879728/details_fiction_and_downpipes