Duramax 4 Inch Exhaust VS 5 Inch Exhaust

[@dansie_lbz6236]

I’m just happy to see anyone with any kind of straight pipe these days.

[@NaztyNate]

They sound so good!

[@killaz123456789100]

Ikr

[@arfifteenguy]

I have 4" on my 07 LBZ and I just love the suttle rumble of it

[@ryanfenner]

How are your ego's with the 4 inch?

[@arfifteenguy]

@@ryanfenner I have a huge ego :P My EGT's are never above 1100 but I have stock down pipe and its not deleted

[@jerredwayne8401]

@@arfifteenguy same. But i got my delete and lly downpipe in finally

[@kylerokitjanski7598]

I did my egr delete, downpipe and exhaust all in one go. The only difference is I went with the 4” AND a muffrawr. Egts can still get up there I have noticed though. I prefer the sound and get complemented on it frequently. Back to doing my headgaskets 🤣

[@bat__bat]

Both sound good. That distinctive DMAX sound doesn't get old.

[@NaztyNate]

I agree! I love it

[@phillab57]

Solid video, thanks for the no bs comparison

[@NaztyNate]

I appreciate it! That's the goal with most of my videos!

[@vladr1249]

Got a custom SS 4” with 3” ppe dp. Sounds pretty good with minimal drone around 2100rpm, not too obtrusive when towing.

[@NaztyNate]

I have noticed when towing with mine (3in dp and 5in straight pipe) it drones loud around 2000-2100 rpm if you stay at a speed around that.

[@shulamitekonko3247]

i love the wide open throttle the 4 makes it sound like a duramax

[@kylescaggs]

Thats just the stock downpipe

[@zacharymoon8147]

I like the 5” sounds more better

[@jerredwayne8401]

Glad I went with 4" that 5" sounded too much like a powerstroke

[@jayyy.moneyyy]

How much trimming did you have to do to get the 5” on the regular cab?

[@OGKILLa9365]

I have the same truck as the white one. Mine is a 2006 duramax 4x4. Best trucks in my opinion

[@NaztyNate]

That's what this is too! 06 4x4

[@OGKILLa9365]

@@NaztyNate rare combo, they're hard to find

[@juangerardotorres7703]

I think 🤔 4 inches sounds more rumble for me vs 5 strait pipe 🤔 😅

[@MidnightRider1034]

The one with the 5" in this video is not how a lbz with a 5" typically sounds, it should still have the scream at full throttle just with a deeper tone

[@NaztyNate]

I think I'm going to put my stock down pipe back on and make a video comparing the down pipe sound.

[@kylescaggs]

Scream is the downpipe not the exhaust

[@darrynlockwood114]

1:09 4" 1:39 5"

[@killaz123456789100]

Diesels arent obnoxious enough for me, i like that ROAR a V8 makes and a choppy idle... diesel sound cool when your stomping on it and in person dont get me wrong, but on camera they just arent loud enough for me

[@NaztyNate]

You cant beat a gas job!

[@nolanmcneill5710]

What kind of exhaust did you get to get it to fit on a regular cab I’m trying to find one online can’t seem to find one

[@NaztyNate]

You'll have to buy one for a crew cab truck and make it work, I used a straight piece of exhaust pipe in the center section along with a crew cab kit

[@connorhughes9112]

How much different would these sound if there weren’t tuned?

[@NaztyNate]

Barely at all. Probably wouldn't even notice

[@farzinshayegh2275]

Love it clean regular cab diesel ☺️👍🏻

[@ccooper04]

I’m running the oem down pipe but wanting to swap it out for a 3” mbrp or something similar. But running the 5” without a muffler and love the sound of it. Currently on the older edge evolution with tunes but wanting to run EFI Live being the edge was already installed when I got the truck but I haven’t changed the tune it’s been on.

[@NaztyNate]

the downpipe definitely changes the sound at full throttle! I would do it if I were you!

[@ccooper04]

Nazty Nate I’m going to end up doing it along with the egr delete and install the lb7 up pipe. Everyone on the lbz pages say to go with Danville, starlight and ridge runner for efi tuning.

[@NaztyNate]

@@ccooper04 Yupp! ive got ridge runner and would never go back!

[@rodleypumpkins4174]

Clifton Cooper I ran 5 in with stock down pipe on my lmm for ever finally put a 3 in ppe down pipe on and ya it was weird to get used to. Definitely changes the sound at high throttle but even half throttle. I noticed that “scream” a duramax gets at like 3/4 to wot went away when I switched It got cleaner and deeper sounding but has some popping and wraspy sound at wot. Took awhile to get used to tho. Also I went with efi from Motorops they’re out of Canada which is cool because Canada doesn’t give a fuck about our epa laws. I’ve heard that some of the famous efi guys here in the states have caught a lot of shit for their tuning and are getting more enforced by the government. I’ve heard this is causing the tuning to be poor and some guys quite tuning all together. Just rumors I’ve heard floating around

[@colinwayland7160]

What does the 3 inch down pipe do? I see you’re supposed to lly swap the lbz down pipe or get a 3 inch. Just wondering

[@NaztyNate]

Its just opens it up a bit more and makes it sound different. if your truck is mostly stock there is no power gain. people do say they have lower EGTs with a 3 inch down pipe though

[@SWC.PRODUCTIONS]

What is the wheel and tire set up on the crew cab?

[@everything_delete8005]

I got a 4 inch on my lml and I’m wondering why it makes that sound at full throttle compared to the 5 inch?

[@NaztyNate]

So the noise most people talk about with a duramax comes from the down pipe. in this video the white truck has a 3 inch down pipe and 5 inch exhaust and the gold truck has stock down pipe and 4 inch. If you want to get rid of that noise you need to get a 3 inch down pipe.

[@everything_delete8005]

@@NaztyNate Thanks eh! Gonna swap that pipe asap

[@NaztyNate]

@@everything_delete8005 It's definitely worth it in my opinion. At idle it sounds way better too. It is kind of annoying to get to though.

[@connorhughes9112]

@@NaztyNate how much cab drone do each have compared to stock when cruising highway/interstate?

[@NaztyNate]

@@connorhughes9112 neither are bad for that, unless you have an axle dump. 5 inch is definitely a bit louder. The 4 inch on my Yukon (recent videos) you can barely hear on the highway

[@cravenmoorehead5]

Hey!! That's in franklin!

[@NaztyNate]

Haha yessir, good Ole Franklin OH

[@kylepeters6297]

Did the white truck have a tune on it

[@NaztyNate]

both of them do

[@kylepeters6297]

@@NaztyNate what are you running on the white truck?

[@NaztyNate]

@@kylepeters6297 they are ridge runner moonshine tunes. Not sure if they still do it anymore but they still have great customer service and clean good running tunes

[@rexgratteaux8655]

4" will support 900hp why get the 5" except alittle louder maybe

[@NaztyNate]

Amazon!

[@rexgratteaux8655]

I got a 4" mbrp 3" downpipe on my 2004.5 LLY SOUNDS GREAT, Specially in tune 2 MOROR OPS DSP5

[@rexgratteaux8655]

MBRP PLM AKA PERFORMANCE LESS MUFFLER

[@2005llyduramax]

Need down pipes for the trucks, will sound a whole lot better

[@NaztyNate]

The white truck has one. the silver truck is getting one as we speak actually

[@theboringchannel7685]

I think both of them sounds stupid but maybe an 8” would sound so meaner. I recommend 8” :)

[@NaztyNate]

10" take it or leave it

[@theboringchannel7685]

@@NaztyNate say no more 😂

[@NaztyNate]

@@theboringchannel7685 i might need to figure out a way to do that 😂 just because

[@theboringchannel7685]

@@NaztyNate do you know where I can buy a 6” or 8” true duals straight pipes? I’m having a difficult time finding just the one

[@LabiaLicker]

@@theboringchannel7685 you do know that if the exhaust is to large of a diameter it decreases hp right?

[@stankmeme5909]

The five sounded like a 6.0 or 6.4

[@NaztyNate]

I do agree they are similar

[@coltsc10s81]

4 is better

[@Onhaey]

Can’t compare the sound with two different length trucks

[@NaztyNate]

I don't think 2 feet would make a difference.

[@og_tokyo]

they both sound the same at idle, but it's hard to hear or see anything well with this potato quality video.