Compression Ignition Addict
Join Date: Aug 2007
Location: New Martinsville, West Virginia
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Stock exhuast is fine, once you straight pipe it, untill you hit the 400 hp mark... the stock muffler is the bottle neck, and a replacement exhaust isn't 'really' needed untill you start making big HP.
Straight pipe it, do the DIY/6637 air filter ($50 or less), add some gauges ($350 or so), and a good tuner ($400-450), (I have a DP Tuner in the yellow truck, and like it, been there about 4 years now) and you will be pleased with the results for about $900 total, if you can do the work yourself.
'99 E350 DRW Stahl 11' util box van, 7.3 PSD, stock. 138k SOLD
'00 F350 extcab, 9' utility bed, dually 221k
E'99 F250 extcab, S/Bed 211k
'00 Excursion Limited, 7.3PSD 281k
'84 Chevy K-30, 6.2L TD, woods/trail beater. 141k