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 228k
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E'99 F250 extcab, S/Bed 211k. Sidelined due to motor issues.
'00 Excursion Limited, 7.3PSD 294k
'84 Chevy K-30, 6.2L TD, woods/trail beater. 141k