HELP, Im new

[250HD]

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

[twildman]

Originally Posted by 250HD

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.

[onecrazyblackredenck]

I didnt have to on my 99.5....I dont think you have anything to worry about....

[ABOBB]

Welcome to Powerstroke.org

[SMKSTAX]

[strokin_early_99]

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.

[bigwhite7.3stroker]

Welcome to org!!! No mods needed to fit 4inch DP on my 99.5

[250HD]

Great, thanks eveyone. Oh yeay, Will I see any difference between 3.5" and 4" down pipes.

[strokin_early_99]

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'

[bigwhite79]

Welcome