Question about 4" exhaust
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Elder User
Joined: Oct 2003
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Question about 4" exhaust
I have always wondered if 4" exhaust was so much better, why didn't ford put it on in the first place? Could it be an emissions issue? Also same question goes for the high tech intakes.
Thanks
Frank
Thanks
Frank
Senior User
Joined: Sep 2004
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From: Texas Gulf Coast
I'm sure its a cost issue on Fords part. Take the cost difference between 3 or 3.5" pipe and 4" pipe and multiply yhat times the number of trucks made a year, thats quite a cost savings. Sinse the factory exhaust is adequate for the factory tune (de-tune) on your computer, there's no reason to spend the extra money. Modifying the intake and exhaust is required for those that want more HP. It helps keep your egt's lower while running a 'hotter' tune making more HP.
Posting Guru
Joined: Feb 2003
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From: The Great Plains
Originally Posted by touchofgrey
I bought my 2000 F350 dually used, and it had a stock 4" exhaust. I guess it was an added option.
