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Was talking to a mechanic in South Sydney (specialises in BMWs) who offered me to change my exhaust and put a chip in, saying i will increase power by 20%, for around $1000. Not sure how i get a new exhaust from that, so im assuming he will remove the weak point of it and weld it back up. Is this possible or is he p1ssing in my ear, $1,000 for 40kw is pretty enticing!
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