Does anybody know of any free or really cheap stuff I can do to my Z to give it a small gain? For example, I know on the 93-97 Camaros, we could remove the airbox silencer and cut open the airbox to allow more airflow to the filter. Or, some guys I know of cut openings in the plastic under the airbox and ran ducting up to the airbox, like a cheap underbody ram-air. Anything like this on the LS1 bodies?

 

check out www.installuniversity.com

there are a bunch of links to free mods

some to look for:
free ram air (listed alot as FRA)
throttle body bypass
bumpstop mod
timing tricker (or SLP air temp module)
manual fan switch
skip shift eliminator (cags)