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Message: <blockquote data-quote="David Yong" data-source="post: 273314" data-attributes="member: 3555">Not having it on my E90 but I have it on my other car and IMHO, it doesn't give huge differences. Of course it is better than the original filter especially at high rev zone just like what Astroboy said but if you expect a lot from it in terms of increase power and saves fuel, you will be disappointed. I would say, there is slight improvement against original filter and with such a price as compared to our original filter, it is worth going for it especially the price of our original filter is not cheap (I think is somewhere around the region of RM 300).</blockquote>