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hows this muffler? and will it really incrase HP?

ok, im looking to buy a muffler for my mazda 3, nothing too expensive. just something like this: http://toronto.kijiji.ca/c-cars-vehicles-parts-accessories-CAR-PERFORMANCE-MUFFLER-EXHAUST-CHROME-15HP-MAXSPEED-INSTALL-W0QQAdIdZ50208214 now do u think its a good 1? and will it look nice on a mazda3 ? i dont want something with too much noise so everyone can hear, something kinda quiet, more for looks, but a little noise too. and it says it will incrase horsepower by 12, i know its not much, but still, would it really? and by the way, do u guys think 45 bucks for installation is a good price? thx for the help

Public Comments

1. I think the best, most affordable, performance enhancing exhaust is the AERO exhaust! These mufflers have the best sound and are entirely polished not just the tip. Check out the video on the site! You can order the muffler from the website and have it put on at a local shop. 45 dollars is an excellent price if they put it on right. http://www.aeroexhaust.com/
2. In any exhaust system, the muffler only release pressure if the upper plumbing was freed. What that means is if you have back pressure on the cat converter, having larger pipes down stream isn't going to help much. Good Luck...