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I just purchased a 2006 Chev Cobalt LS 39k kilometers 4 door (standard transmission) for $5700 big smackers.

Ok im trying to save on gas and increase my MPG as much as possible. Ive thought about getting a Magna-Flow muffler from Canadian Tire which is around $50 smackers if im not mistaken.


Would you reccomend this or has anyone tried it? results?

this is what it looks like

 

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I have a friend of mine that put a magnaflow on is lt and it sounded perfect! loud when ou accelerate but quiet on the highway
 

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If all your going to do is throw on a muffler without anything else you are not going to save that much in MPG, it will probably not be that noticeable. It will help a little but how much just depends on the factors. Just like your mpg can vary from fill up to fill up so too can the affects of a muffler differ from day to day. It has a lot to do with your driving habits. If your looking for real MPG gains your best bet is a full catback system, improved driving habbits, and a CAI. As for the sound I Had a flomaster on my cavalier (same motor) and it sounded good I am sure the magna flow would sound good too.
 

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Magnaflow makes a nice muffler.

I'd suggest the entire catback, to replace the tiny stock piping.

Catback, header, downpipe and a drop-in filter (or SRI), and tune will be the best set of parts for better gas mileage.
 
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