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