Okay...
smooth tubes + K&N panel filters: ~$200
ebay Test pipes (or, used resonated TP's if you can't tolerate the rasp: <$150
Take off Nismo Exhaust: < $550
So under to about a grand, more accurately. Add $100 to $150 if you would rather get a CAI (used).
Add some unknown amount for installation... another couple hundred maybe, although some of that can be done by oneself with few or no tools (i.e., the tubes and filters).
Although you'll see additional gains and improved response with a tune, all of those mods can be added and work well without one.
Search for evidence of gains (e.g., Proven Power Dyno thread).
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Enjoy it. Destroy it.
Last edited by Jordo!; 11-30-2013 at 03:19 PM.
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