cold air intake 
Yep! 
cold air intake
On The Tree
Joined: Aug 2009
Posts: 113
Likes: 0
From: Texas
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Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
It work ok. Just that there is not a convenient size. I ended up using 4" schedule 20, but the OD is too big. I had to glue my rubber connectors inside. 3" PVC seemed too small to me and the 3.5" would be perfect but it really isn`t used anywhere so its $$$$$$.
buy a cold air intake for a 99 up silverado off ebay, like $79? cut it to fit whatever you want, and its huge 4in with the right couplers and a nice big filter. Looks professional and way better than ghetto pvc pipe
