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Message: <blockquote data-quote="pussy" data-source="post: 302257" data-attributes="member: 60">my opinion..1. dun do it unless it's properly done by bmw i.e. e92m3..cos the design of the m3 is to collect air inside. funny way, cos the engine need to exhale hot air..2. the design of the car is calculated to dissipate heat below and aid proper air flow from the front grilles into the rad and onto the engine to exit below the firewall...by adding ventilation above will upset the flow..but hot air rises up.. 3. upset the cd factor during driving at high speeds , maybe wild guess..4. other way, it might be for cosmetic purpose or looks but serve no purpose.5. one member has done it on his car, an e30, but also having the hood adjusted upwards.. he claims it does a lot of justice..last, if it's done tastefully, it will look nice, but i wont be wanting the e60 to be looking too ah beng. the car is nice as it is..regards.</blockquote>