I put the exhaust on last weekend and the intake on this past Sat. The exhaust I got was the MBRP 4" turbo back SS with a 5" tip. Sounds awesome. Sounds really deep but not to loud. Looks great too. Took 45 mins to cut stock off and put MBRP on. The intake I went with was the AFE Stage 2 with the Pro Guard 7 filter. Also sounds awesome. The intake makes it sound like a small personal jet. Noticed a big difference in acceleration and power with exhaust. Havent really noticed anything but sound with the intake. But I only had it on for a day so far. Overall very pleased with both. Next mods are Programmer and gauges.

 

OOOOHH looookk oooout!!!! TOO late you have been bitten!!!

Congrats on the mods. Now the fun begins!!!

Shane

 

Fill in your sig so we know what you put all the new goodies on.

 

I wonder why there is more power?

 

What? Are you serious? More air in/more air out = more power, quicker spooling, etc.....

 

I've changed to flo through mufflers on my 03 and 05, and use an oiled filter. I believe my truck runs a bit cooler when I'm pulling, and they sound a bit more mellow- I didn't really notice a big difference in power or acceleration. I don't have a programmer or chip on my truck(s), however. It is a "serious" question. I have read many posts on many threads that say flow through or straight pipe gave slight gain/ slight loss- most say no noticable difference, until they install a programmer. I'm not disagreeing at all, but I would like a mechanic- type person to explain if freer flowing air on a diesel alone (no progamer) will actually make a big difference in power, and why?

 

I think the increase in power feeling is due to a quicker spooling turbo. Without the restriction from either end it spins easier. You may pick up a few hp in the lower rpms due that fact, but IMO peak hp is uneffected.

 

The sound alone tricks the mind to an extra 30 HP. Thats all it is

 

I'd agree with that LOL! When I changed out the muffler, the first thing I was doing was stepping on it to hear how it sounds, and how much more turbo sound there was.