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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

exhaust ?

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Old Aug 29, 2008 | 08:49 PM
  #1  
mooncricket's Avatar
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exhaust ?

i was wandering if i would be hurting anything by getting rid of my stock muffler on my 1997 f250hd with a 460 and just running a straight piece of 3 inch pipe out the back of the cat
 
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Old Aug 29, 2008 | 09:43 PM
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No I dont think so some people say its harmful to the engine but I dont think it is lots of people have mixed opinions ask your mechanic or exhaust guy
 
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Old Aug 29, 2008 | 09:57 PM
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that was my thought i figured that since it was still the factory cat id have plenty of back pressure so it would be fine
 
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Old Aug 29, 2008 | 11:49 PM
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You should be good to go on that one.
 
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Old Aug 30, 2008 | 09:32 AM
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The EFI system on thse trucks is designed to automatically adjust to changes in airflow throught the motor, you can do anything you want to the exhaust system as long as the O2 sensor is present and connected. In general the stock exhaust system is designed to be quiet above all else and it does sacrifice some power to achieve that goal.
 
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Old Aug 30, 2008 | 09:40 AM
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Originally Posted by mooncricket
i was wandering if i would be hurting anything by getting rid of my stock muffler on my 1997 f250hd with a 460 and just running a straight piece of 3 inch pipe out the back of the cat
i have mine angled out the side at 45 degrees.
 
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Old Aug 30, 2008 | 01:26 PM
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I have an 88 F-250HD with 352W and had a whole new exhaust installed
but went with dual glass packs with tail pipes running out behind tires
on both sides.
Much cheaper than the stock system which was $400 compared to the $200
I spent.
No cat, no harm !
 
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Old Aug 30, 2008 | 01:36 PM
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well i built my exhaust this morning and it cost me a whole 20 bucks for the pipe and clamps just did a 20 inch section of 3 inch pipe out the stock cat and best of all i acctually like the sound
 
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Old Aug 30, 2008 | 04:27 PM
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my new exhaust i think it sounds alright
 
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Old Aug 30, 2008 | 04:45 PM
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Sweet. That is what mine sounds like. I wrapped mine up to 4500 RPM's and it really sounds sweet.

I am going to get a $50 or so rear tailpipe for mine though because I may be moving to Utah eventually so I can be closer to my National Guard unit.
 
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Old Aug 30, 2008 | 06:34 PM
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Just make sure its not blowing on ur ebrake cable, i melted one of mine lol.
 
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Old Aug 30, 2008 | 08:31 PM
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Sounds pretty wicked...
 
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