to answer your question is it worth it. I would say yes.
read the following articles
Part 1
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Part 2(important one on intakes)
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Part 3(maybe not so important for ecomodding)
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Part 4
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Part 5 (The results section has important info)
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dyno with just intake and exhaust mods
http://autospeed.com/cms/gallery/art...0&a=109345&i=7
Would it be possible to fit the 2.0 liter intake system to your engine?