Nice. I kind of wish I did that so I could have a good base to go off of. I have some 0-60 times before and after a tune (with the K&n and muffler installed already) and was pretty impressed with the gains we got there.
I want a yank and headers with no cats. I went into Muffler City to have them weld a bung in for a wide band sensor and the guy seemed a little confused and was saying he didn't think there was enough room to mount it in the correct position. Can the wide band sensor be behind the O2 or does it have to be in front? They don't have a plasma cutter anymore so I think he was concerned about clearance with using a drill.

I might just go check out the place in Palmer that did your exhaust, maybe they will have some better input.
Know Roger for years.. it was only recently that I started using his services to void warranties and go faster

 

welcome to pt.net

 

And a little more whoring.
A video of me VS a TBSS.

Had lots of people saying it was fake or that the TBSS was not running right. Not sure what they normally run but what he ran in this video was pretty consistent of what he ran all night. Not sure what else he could have done with an AWD vehicle and an automatic. Smash the gas and go.. pretty simple right?

GMC Sierra vs TBSS - YouTube

 

That's awesome for your truck, bad for your wallet! Lol

 

Haha yea, I can see this getting very spendy if I let it. It's worth it though

 

Yes they are!

 

Nice Truck! These trucks sure have a lot of potential!