Originally Posted by Too6Z

My mechanic is extremely knowledgeable when it comes to Zs. From what he's told me, if you're looking for legit hp gains, HFCs and a good cat back system are the best starting point followed by new software and tuning. I was leaning towards doing a CAI abut after talking with him, I'm convinced that it's more of a cherry on top than a priority mod. From what I've been told, the factory air intake is quite respectable. With tuning, a CAI will net you 5 hp at best. Prioritize the exhaust system, and branch out from there. If you're looking for a solid cat back system, Motordyne is the way to go.

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