Many thanks to MattBianco for this great thread. I think this is probably a stupid question but here goes! For 30d/35d owners the M Performance Power Kit includes a "more powerful charge air cooler" which seems to be the only piece of hardware. I was wondering if anyone knows if this air cooler is really needed, or just there to make people feel better about paying so much for such a modest power improvement? Is it standard on the 40d and 50d models? Thanks in advance for any comments.
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