We worked with Burns and Katech to develop our header lengths, diameter and steps to make the most power we can over the entire power curve. LSX engines like to breathe, and the LS2 is no exception to this. the 1-7/8" primary to a 2" to a 2-1/8" to a 3-1/2" collector was determined to be ideal for the engines. I trust Katech over anyone in the LSX industry to make that call.
Tyler
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