Contour Enthusiasts Group Archives Forums Modifications Duratec Performance most restrictive part of 2.5?

Originally posted by platinum_drew:

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well adding a set of MSDS headers can net as much as 15 horsepower, so I"d say that's a pretty strong choke. adding SVT (bigger) UIM/LIM compenents is also pretty noticeable, since the sizes are pretty different. A lot of the other stuff you listed is negligable, but a modified Y-pipe is also a highly suggested mod, but it doesn't surpass the headers.

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i was pretty much just asking so i would know...i already have an I/H/E, and an SVT LIM/TB on the way. but since i have been looking at all of these parts that have air going thru them i was just wondering which ones were THE MOST restrictive