One of the things that you will see on a professional exhaust system and virutally any exhaust system that comes from a factory that is attached to a V8 is a crossover. But why do you need a crossover, can you get by without it, and is it worth the trouble? This is really quite a complex issue (like most exhaust issues... you'd
think that pushing gas out of the engine would be a simple thing, but
it isn't).
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