Uploaded May 2012 | Updated September 2026, 14 hours ago

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Here we have a BMW E46 M3 that came to us that was supercharged & only making 209rwkw,since we spent time measuring the pulleys and fitted the the correct ratio pulleys and some other small minor mods & carrying out a custom tune.the result was a healthy309rwkw/ 415rwhp...not bd for a car of the year...there still more power to be made with a fuel system.