I'm new, quick questions
 

Ok so i wanna start modding my Z. I have an 05 auto. What can i do to my Z to add HP without getting into FI? I would like to keep my engine NA. I'm looking to spend between 1 and 2 grand, so nothing too fancy. Any help would be appreciated.

Start here, https://my350z.com/forum/engine-and-drivetrain/50429-new-350z-owners-read-this-before-doing-any-modifications-to-your-z.html

Then just look at the headings of the posts under the tuning or exhaust sections of the tech area. Look for headings that talk about mods you might be interested in and then read through the threads. As a newbie there's a wealth of information on here you can learn before you'll ever need to start asking questions. So read up, learn, learn, learn, and have fun.

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A good place to start would be searching through old threads where people have posted dynos.

That should give you an idea of how much HP they are making and with which mods.