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Dillydilly

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  1. Has anybody herd of or are running aftermarket exhaust on there 3.0 duramax? Only one I found was a cat back PPE system but has no reviews or videos. And has anybody ever ran into a problem with adding something like this to there lease? I asked my salesman if I could add this exhaust system and a s&b cold air intake to in and he told me no as it would void warranty and lease coverage. However S&b states otherwise. thanks
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