how do you make a home made cold air intake? has anybody made one?

 

Not sure what your exactly looking for, but this is what I made.

https://ls1tech.com/forums/showthread.php?t=315183

There are a lot of other guys around here that made their own intake tubes and put an open element airfilter at the end. Try doing a search, a few may pop up.

Jeff

 

I second the search. There have been hundreds if not thousands of posts reguarding that very topic.