5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

exhaust hp ?

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Old 05-09-2005, 09:19 PM
  #1  
86inworks
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Default exhaust hp ?

does anyone know how much hp ill gain when i put my shorty headers, h-pipe(w/ cats) , and 40 series amer. thunder cat backs on???
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Old 05-09-2005, 09:35 PM
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philthy89fifty
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Default RE: exhaust hp ?

nope but i can tell you it is gonna sound awsome!
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Old 05-09-2005, 10:06 PM
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silver91gt
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Default RE: exhaust hp ?

it all depends on what other mods you have.
if you have h/c/i combo it will produce more than the stock h/c/i.

american thunders are loud.
I have them and when I drive in my neighborhood at night I have to keep the rpm's below 1100, or its too loud.
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Old 05-09-2005, 11:03 PM
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SN95FoxII
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Default RE: exhaust hp ?

Love that flowmaster sound
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Old 05-09-2005, 11:20 PM
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86inworks
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Default RE: exhaust hp ?

wat does h/c/i mean...and does any one think ill get a 25 hp increase?? the only other things i have done are a:


180 degree therm.
K&N Filter
ram air hood (keeps things really cool during the summer)
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Old 05-09-2005, 11:41 PM
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Chris C
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Default RE: exhaust hp ?

h/c/i= heads, cam and intake
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Old 05-10-2005, 12:39 AM
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fordguy17
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Default RE: exhaust hp ?

10-15 rwhp. but it will sound great.
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Old 05-10-2005, 02:04 AM
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fast plan
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Default RE: exhaust hp ?

sorry to hijack but fordguy17 where did you get that front end? is it just an insert or what? it's very clean and i would like to do something like it, but with the mach 1 insert.



also a buddy of mine cut all the cats off and put dynomax bullit series mufflers......now thats loud.
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Old 05-10-2005, 04:16 PM
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tomabram
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Default RE: exhaust hp ?

Take the cats off and you should get at least 25HP out of it.
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Old 05-11-2005, 12:24 AM
  #10  
86inworks
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Default RE: exhaust hp ?

cant we have emissions here in Gwinnett County, Georgia
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