chakoman

I cannot find any long tubes for the 07 either. I have the cosa sport catback(which I love) but I am sure some long tubes would definitely add some pull. Somebody out there surely knows!

I have an 07 with DOD and I noticed no difference in the sound with the stock exhaust. When I added the Corsa sport cat back, there was a definite change in sound and there was even a kick in the truck when it changed from 4 to 8 cylinders. Mr. P is right about the DOD. I found it was only activated when I was coasting on a downhill. I disabled via hptuners and there is a definte difference in performance. Anyhow, none of this may make sense, but I figured I might as well chime in.

I believe the 6.2 comes in the Denali edition only but I am not for sure. The 07 vmax has a 6.0.

I have an 07 silverado NBS vmax. I have gone with the Volant CAI (15253) and the Corsa sport cat-back exhaust with the twin tips out the side. I don't know the number on the Corsa but you can find it on their site. I cannot speak on GM accesories but I am completely satisfied with the VOlant and Corsa. The Corsa has a nice mild tone while cruisin around town, but do not let it fool ya. At WOT, the tone is amazing and definitely turns heads.