Robs 2005 z71

I,m looking to get more bottom end out of my '05 z71 sierra (5.3l) It's been tuned with a bullydog tuner, (probably not the best) catback true duels, underdrive pulley, tbi spacer, cold air. I'd like to get more all around really, but I'll take what i can get. I,m intrested in all of this intake swapping I,m reading about, but am confused as to what I need or can use or if I can even do it and what kinda gains I can hope to see. Any help would be greatly appreciated. Thanks in advance.

Mangled03gmc

iTrader: (95)

Ditch the bullydog and get a custom tune that can be finer tweaked then a handheld...

Robs 2005 z71

ok cool. who do you recommend? any info on this whole intake swap too? thanks again.

06Sierra2

tune by somebody over here>>and look for used ls6 intake or go fast 102 lsxrt!

Robs 2005 z71

ok thanks. is it a complete upper and lower swap or just upper or just intake? and if i wanted to buy the stuff new what yr and model veh should I purchase it for and will it have to be tuned for it to work? thanks again and sorry about all the questions.