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  1. E46 2000 330d - CPP+ Tuning System?

    BMW ECU Tuning and Standalone Tuning
    Anyone ever heard of it? Is there actually anyone who can vouch for it. I'm not usually one of those guys who likes to take it from standard but for £109 is you actually do get that performance increase it's worth it. Another part of the question is how can it increase power yet drop mpg? And...
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