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Message: <blockquote data-quote="zeroed" data-source="post: 605151" data-attributes="member: 24972">My friend did the M50B25 intake manifold on M52B28 mod...Not sure if done correctly (very reputable mechanic though),  after that you definitely get more high power but the smoothness, low end power delivery and response in general feels a little bit odd. Test drove a stock 328 and both of us preferred the original.So, unless you want all-out power at high rpms and are willing to sacrifice a little low end response, power and smoothness, suggest to keep the stock 328 manifold... Complications involve rerouting all the hoses underneath, which may require new hoses, and a custom bracket to fit the M50 manifold. Total cost ~RM1k - 1.2k I think...PS.The same friend went on to put M3 Euro exhaust manifolds on his car (banana type) and a higher flow rearbox, now low end power REALLY koyak but power kicks in at 4k rpm like VTEC. Dunno what to say! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /></blockquote>