[01smoker]

Thanks for the reply. I also have a few more questions if you don't mind.
I was looking at different exhaust systems to go with and I ain't real sure what sounds the best on these duramaxes. I know that on a cummins, 5" sounds way better than 4". Is that so with the duramax also? What does an lly sound like without a cat or muffler? I have heard the lb7's straight piped but I haven't heard a lly with the variable vane turbo straight piped yet. Will it sound better with 5", or should I go with 4"? Or should I just leave the stock size and just have the cat and muffler cut off? How would this sound?

Also, I see that alot of you guys are using the EFI live for tuning, is that better than just using a programmer? What all does the EFI live do and how do I go about getting it?

Thanks for all the help, I know there is alot of questions, but I don't know who else would know besides yall.

Zach