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Discussion Starter #1
i have a 99 psd with a 4"straight pipe to 5" bullhaulers. I like the sound but my problem is that i have heard others with similar setup and they have a better sound. any suggestions on what kind or size on a downpipe would be helpful
 

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Go to summitracing.com and get there 4" downpipe it is like 80 bucks It is what I have.
 

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Discussion Starter #6
i've heard that 4" is "impossible" and "too difficult" it can't be that hard is it?
 

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Discussion Starter #7
did you go with a mandrel-bent, steel 4 In inlet and 4 in outlet aluminum
 

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4 inch down pipe fits fine. I've had mine off and on maybe 10 times with no problems.
 
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