Factory air box
Thread Starter
Burning Brakes
Joined: Aug 2010
Posts: 1,040
Likes: 1
From: Motorsports Capital of the World..Indianapolis Indiana
Factory air box
Looks like my C5 is possibly starving for air, is the tube on the side of factory air box really the only source of air?
Anyone cut a hole in this thing, does it help?
Anyone cut a hole in this thing, does it help?
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,144
From: Dyer, IN
I'm assuming you mean the tube on the drivers side, which is not the air intake for the assembly.....rather..it's the air supply to the AIR pump. There are many threads covering cutting holes, zip tie mod, etc. At the end of the day, most guys just end up buying a free flowing aftermarket assembly, instead of cutting up/rigging up their setup.
Go for it.
Melting Slicks
Joined: Jan 2007
Posts: 2,170
Likes: 6
From: Oilerville Edmonton
St. Jude Donor '08
I did the same as above but not as big of a hole. I covered it with some mesh and replaced the filter with a k and n. not really sure it did a lot but it was fun to do 
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
Yes, early C5s have very poor air filter tops, they only have those two 3/4 to 1 inch "tubes". I replaced mine with a 2002 ZO6 filter top, much better, both sides are vented and a large slit in front. It is still water safe (to water if you don't have a hood seal or if you lift up hood after washing or rain.
