I'm about to switch to either a 4&quot; or 5&quot; straightpipe turbo-to-tip system and I was wondering which one is LOUDER than the other? <br><br>I've been told that 4&quot; is louder than 5&quot; which I find hard to believe so I'm asking you guys that have these systems of have heard these systems. <br>Thanks<br>

 

i got my 4&quot; system from rip rook. straight piped and i love it sounds awesome good luck, scott

 

If you want loud then go 5&quot; from turbo back to the end of the cab and put a tip that goes at a angle out the side.

 

For loud, the shorter and larger it is the louder it will be. How 'bout a 90 degree bend out of the turbo up through the hood, puller style? That oughta be loud enough for ya! ;D

 

My 3&quot; stock exhaust (muffler MIA) is loud as that &quot;firey place down below&quot; when I have my box turned up. So just lose the muffler and add more fuel, you'll have plenty of noise. ;D<br>I have enough to worry me when I pass and officer of the peace. :<br><br>Chris

 

4&quot; straight piped dumped by the rear axle is extremely loud. Straight 4&quot; downpipe is really loud. Doesn't sound good though. I plan on going with dual 5&quot; side pipes later on down the road. Straight piped of course. ;D

 

5 inch from the downpipe back is pretty loud. I had to put a muffler on mine because it was so loud that it shook the back glass. But if you want loud 5 inch is the way to go. Why are you getting rid of your stacks.

 

Got Smoke,<br><br>You won't see too much of a voulme difference betwen pipe sizes. It's mostly a tonal difference and diffrent tones are perceived as louder or softer volume. The 5 inch is going to be a bit &quot;boomey&quot; for some folks, we sell a lot of our 4 inch systems with a muffler delete pipe and customers love it, no drone either by the way for the customers weve heard back from.<br><br>Mark @ DPPI

 

[quote author=yrusoslow2 link=board=7;threadid=16471;start=0#154876 date=1056970447]<br> Why are you getting rid of your stacks.<br>[/quote]<br><br>I have heard to many regular straightpiped diesels around my area and miss the pure RUDENESS of a straightpipe! ;D<br><br>And with my BOMBing 4&quot; could help a little.<br><br>I'll make somebody a good deal on a stack setup that's only about 5-6 months old!

 

I vote 5&quot;. My neighbor, with a 3406 equipped KW dump truck with 8&quot; straight stacks, says my truck is too loud.

 

4&quot; open pipe stacked is pretty loud, maybe too loud <br>a local cop heard me commin from 1.5 miles away in the middle of the night 7 waited right by the highway to write me up a ticket but it sounds great

 

I heard a 5&quot; straight pipe on a 2003 3500 tonight. Sounded mean!

 

Rattle_rattle<br>Sounds wicked doesnt it? I heard one and it made me say what the heck was that?

 

I heard an 03 today with an exhaust. SD, you know the black one over by DixieLandDelight? It sounded alright. Didn't get to really hear it though. I was jamming in the Burban.

 

Both My friend and I have 02's. He has a 4 inch and I have a 5 inch exhaust. His has a nice deep growl with a little bit of bite. Mine has a deeper tone but is very raspy almost too much. Now that I have Twins the raspy sound is gone and now I have a nice deep tone. I also have a muffler, without the muffler that 5 inch IMO would be way to obnoxious.<br><br>Fred