I'm looking to do a simple mod... wondering if there are any worth while after-market high flow headers for the E46 M3 or if the stock ones are just good enough... looking to eventually put a turbo on as well
Hey everyone just a little introduction of myself. I own a BMW M3... it's an absolutely fantastic ride. I've only done a few mods. I've been looking around some forums to do some research on what would be some smart moves. Here's what it looks like
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