Can't really find any information on exhaust silencers so I thought I would ask. I have a 4.5" outlet mufler that came with a silencer. I think I knowticed (correct me if I'm wrong), but I think I noticed that with the silencer in it gets horrible gas milage. But with it out it gets a little better? Is that possible or true? can silencers decreace mpg? Also is there a hp gain with them out? Is it a noticeable gain if there is?
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Exhaust silencers
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Originally posted by Boostdprobe91 View PostSee it's different with mine. Mine sounds like crap with the silencer in it, it rattles alot! like no matter how tight it is it still rattles.
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an exhaust silencer is the a great thing to have!
this is what I found from my experience:
1. it will sound almost like stock
2. absolutely no change is mpg
3. a quiet car ALWAYS feels faster
4. the power loss is basically not noticeable at around 200hp or less (it does radically reduce the power output on a turbo car though)
5. if you take an ebay resonator and add just a round metal plate (so that the exhaust gases have to go around it before entering the small tube of the resonator), then you don't need a muffler at all! that's right, it will sound like a stock exhaust system without a muffler!
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