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Old 04-27-2010, 05:22 AM   #2 (permalink)
bgd73
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Join Date: Feb 2008
Location: maine
Posts: 758

oldscoob - '87 subaru wagon gl/dr
90 day: 47.06 mpg (US)
Thanks: 21
Thanked 18 Times in 14 Posts
not much point in it. diesels will send exhaust whistling before they never lose to it. most if not all exhaust mods benefit gasoline.

The only diesels I have seen benefit from opening are tractor trailers.. (4 foot long catalyst insanity).. if that is a problem on your little car, find a bigger honeycomb, and keep oem the rest.
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