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Old 12-14-2007, 12:19 AM
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HELP, Im new

I just got me a early 1999 PSD. It is stock and I want to put a 4" downpipe on it. I have been told that I will have to alter my fire wall to get it to fit, does anybody know if this is true. Thanks
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Old 12-14-2007, 03:42 AM
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Quote:
Originally Posted by 250HD View Post
I just got me a early 1999 PSD. It is stock and I want to put a 4" downpipe on it. I have been told that I will have to alter my fire wall to get it to fit, does anybody know if this is true. Thanks
No you shouldn't need to. I didn't.
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Old 12-14-2007, 05:05 AM
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I didnt have to on my 99.5....I dont think you have anything to worry about....
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Old 12-14-2007, 05:10 AM
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Old 12-14-2007, 05:32 AM
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Old 12-14-2007, 05:53 AM
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No modifications are needed for a 4" down pipe. The early99 and the late99-03 exhaust is all the same. Two hours tops when you do the first one, It takes me less than an hour to do one now.

A sawzall will be needed to get the stock down pipe out. Watch out for the dipstick tube, don't ask.


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Old 12-14-2007, 07:04 AM
Ole White

 

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Welcome to org!!! No mods needed to fit 4inch DP on my 99.5
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Old 12-14-2007, 12:03 PM
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Great, thanks eveyone. Oh yeay, Will I see any difference between 3.5" and 4" down pipes.

Last edited by 250HD; 12-14-2007 at 12:28 PM.
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Old 12-14-2007, 12:34 PM
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Some will say that with the 4" down pipe you will loose some low end power some will say that is false. I don not know if it us true or not but that is what I have read.

Maybe someone will have some data to share.

Keep Strokin'
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Old 12-14-2007, 12:52 PM
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