Mods to the UPD
#1
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Mortgage Banker Mod
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Joined: Nov 2001
Posts: 1,805
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From: Columbus, GA
Just installed the UPD intake on our 5.3 Yukon this weekend and LOVE IT so far.
However, is there anything additional that can be done to the lower part of the stock box that is still in place? I noticed the hole for air to come in is pretty small....
However, is there anything additional that can be done to the lower part of the stock box that is still in place? I noticed the hole for air to come in is pretty small....
#2
Originally Posted by jhelms
Just installed the UPD intake on our 5.3 Yukon this weekend and LOVE IT so far.
However, is there anything additional that can be done to the lower part of the stock box that is still in place? I noticed the hole for air to come in is pretty small....
However, is there anything additional that can be done to the lower part of the stock box that is still in place? I noticed the hole for air to come in is pretty small....
#5
Originally Posted by 02denali
cut a 4 inch whole in the bottom.




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