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  1. R33 GTR runs very rough while cold, slightly lean while warm

    Tuning, Technical Questions
    I've been having a bit of a problem with my R33 GTR. Here in the United States, very few people know much about these cars, so I thought it would be best to ask here. The car is completely stock, never modified. 15k miles, great condition still. The problem only started happening about a year...
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