Need Help: Headers, Cat Back, New Chip?
Thread Starter
CF Beginner
Joined: Apr 2011
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Need Help: Headers, Cat Back, New Chip?
I have a cold air intake on my 2003 GMC Sierra pickup (4.8) I want to do headers and a cat back system. Will the computer re-program itself or do I need to buy a new hyperchip? Any suggestions? Do I need some kind of a program box? I was told that it would too lean with my desired improvements (headers, etc) and I'm looking for some guidance from someone who knows.
Thanks in advance!
Thanks in advance!
Super Moderator
Joined: Jul 2009
Posts: 2,197
Likes: 3
From: Highlands
you can do the headers but make sure to just run a single 3' pipe to whatever muffler you want for maximum gains. as for hyperchip, ditch it and check out blackbearperformance.com or gowheatley.com
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