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First, I'd like to THANK you guys for the wealth of info you place out here. Thanks...
Now, I am in the process of shopping for mods for my truck. A gentleman told me on yesterday that if I install the Airaid, I need to install the Flowmaster as well. He states that since the engine will be taking in a lot of air, it needs to be able to blow out as much. Sales pitch? or is this true? Thanks UB
In general its true. For the absolute best performance the entire intake and exhaust should be as free flowing as possible. However, if you free up a part of the exhaust system (cat-back) it will still help. (That way the engine only has to work against the intake, exhaust manifolds, and the cat). But you will see the best gains if the whole air flow system is free flowing (or as much as possible).