Anyone got a new 07 Chevy LMM Duramax?

[RUQWKNF27]

I have a 05 4x4 LLY LT CC with 56,000 trouble free miles with 4" DP back Exhaust , AFE st2 and Dioblo Tuner and I average 18 mpg. But yesterdayI picked up a new 07 CC 4x4 LT with 360 HP and 650TQ and to be stk it runs almost as good as the other. The exhaust tip they are putting on there now is really a screwed up design and now it looks like they have a extra cat under there. I will post pics after I get it leveled up and bigger tires.

 

[TurboDave]

I have a 05 4x4 LLY LT CC with 56,000 trouble free miles with 4" DP back Exhaust , AFE st2 and Dioblo Tuner and I average 18 mpg. But yesterdayI picked up a new 07 CC 4x4 LT with 360 HP and 650TQ and to be stk it runs almost as good as the other. The exhaust tip they are putting on there now is really a screwed up design and now it looks like they have a extra cat under there. I will post pics after I get it leveled up and bigger tires.

That "extra cat" is actually a particulate filter. The same one that they're using on the new Ford Superduties.
Probably the same funky looking exhaust tips too.