By 2002, actually anything after early 1999, the 7.3 was at the top of its game. The intake after the turbo is fine. Ford put out a nice intake filter system (the AIS) for the pickups but not for the van as space is very limited. Just be sure the filter is fresh and installed properly. This 444 CI forced inuction engine has no throttle plate, it's wide open throttle all the time so LOTS of air.
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2000 F350 7.3 powerstroke diesel
2009 klx250s dual sport motorcycle
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