Question about my 2004 Mustang - Ford Mustang Forum
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post #1 of 4 (permalink) Old 06-07-2006 Thread Starter
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Question about my 2004 Mustang

I just got the 2.1/4" 40 Series Flowmaster muffler for my 04 mustang.

Is that the right size and will it improve my cars performance in any way??:green :green

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post #2 of 4 (permalink) Old 06-08-2006
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single or dual?? anything is better than stock

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post #3 of 4 (permalink) Old 06-08-2006 Thread Starter
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post #4 of 4 (permalink) Old 06-08-2006
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Originally Posted by ecslickz

You should pick up 5-7 hp. You probably won't notice as it's a 2.5% gain, but if you timed it, you would notice a slight improvement.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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