Lext: One of the things you will find out very quickly in this forum is that discussions morph very quickly from their original topic. It's something you will need to get used to if you want to keep your sanity
. To your immediate question indirectly, I have not spent any money on the mods you mention because after reading the archives of this forum I was not able to find anyone who could conclusively quantify any gain in fuel economy. I thought about purchasing a catback exhaust system which purportedly improves fuel economy but I wanted it more for the noise. I finally decided I like the quiet rumble the vehicle already makes and left it alone. Don't know if that helps any but there it is... no morphs either
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