Join Date: Mar 2009
Location: Austin, TX area
Sir you are looking for HFcats by themselves. Delete the pup cats if you got them. Leave the rest stock. That is what I have done to my GT. I wish I had the GXP mufflers. To get the added sound that you will already have.
Has this been done and did it cause any CELs on stock tune? I'd like to do this but don't want to do a tune, yet...
'09 Silver GT
Mods to date: 93 octane, Rotofab CAI, Holden trunk liner & matching Holden umbrella
Mods short-term: spare tire kit, radiator cover
Mods long-term: exhaust, tune