Duramax Hiss vs. Rumble Idle Explained

[@fryloc359]

Fun fact, you can add a switch to the LBZ pcm and enable turbo braking. You can add another switch and enable high idle mode.

[@NaztyNate]

Actually high idle is programmed in it from the factory!

[@fryloc359]

@@NaztyNate it is, but only in cold weather, and one speed. With the switch I can turn I on at will, and bump the speed up to (i think) 2000 rpm.

[@CustomCreations_]

Personally I like the rumble better

[@NaztyNate]

I agree it sounds mean!

[@trucks_n_tractors_6335]

Same

[@tjsylla]

Thanks for explaining this. These contractors roll up in a truck that sounds the same and I've always wondered how to get that sound.

[@NaztyNate]

For sure! It's crazy how much different it cam sound

[@enriquepalomino8636]

My lly has vps and when I'm towing and come to a red light it will switch to the rumble, then back to the hiss idle. Love my lly not tuned only deleted with 5inch straight pipe

[@jordanwoodcock7498]

believe it or not i had a 06 lly and it was hiss tuned ooh boy did i love the sound of it ( sadly sold it a month ago as i had to move and parking that friggin boat of a truck in a small garage was not possible)

[@onecleanplatinum8434]

I love that hissing sound man. I sure wish my LB7 had variable veins so I could get that sound.

[@NaztyNate]

I'll trade ya😂.....not really but ill be looking to buy a ccsb lb7 soon! Lb7s are sick man.

[@onecleanplatinum8434]

Lol I can’t wait to see it brother. I’ll be waiting. Give me some more ideas lol😎

[@Wretched2JZ]

Same here! Hiss all day

[@turbohead5612]

Mine has more of a rumble but I recently put a 65MM garret turbo on it so now it’s both kinda the same

[@loganleone5796]

Are those head lights good quality? If so could you send me a link to them

[@Joshlarose01]

LLY does this too.

[@NaztyNate]

I thought so.. just wasn't 100%

[@Wretched2JZ]

I’m a sucker for the hiss! It’s why I got the lbz! That and the trans 👍🏼

[@NaztyNate]

It's hard to beat these trucks!

[@nathanthornton9567]

They call my Nasty Nate at work! That makes two of us! I got a black lmm. Pretty bad ass

[@NaztyNate]

Thats how I got the name! My previous work people started calling me that! Lol that's awesome

[@michaelvitopaa6171]

Those wheels just hit different💦

[@NaztyNate]

Thanks man 🤟

[@joshuaalmasan3089]

@@NaztyNate what wheels are they?

[@ShermTheGerm420]

@@NaztyNate What wheels are those?

[@perezbrandon1234]

I like when the tune does both

[@NaztyNate]

I agree, it sounds so cool lol

[@denniskonko8335]

lly came with the first vvt turbo and the biggest turbo of all duramx!

[@NaztyNate]

Yessir! I forgot they had the biggest!

[@Mr_Clean]

.... And the smallest radiator

[@trainwreck60]

Dude ! I love this truck !

[@NaztyNate]

I appreciate it man!

[@mattleonard5268]

I love the rumble tune

[@NaztyNate]

That's what I keep it in because I love the way it sounds too!

[@CaleChristiana]

Lly is in fact a participant in this feature

[@NaztyNate]

Correct, actually all duramax except lb7

[@where2towcortez415]

What time u got

[@ozziecrosby2092]

Truck looks really clean. I didn’t think I would like it without the black fender flares but now I don’t think it would look right WITH them! Lol!

[@NaztyNate]

Haha right! No goin back now 😂 thanks man!

[@sik50dk]

That’s a sweat building lots of glass

[@NaztyNate]

Lmao wait till there's a riot there

[@garrettpickard4086]

Thanks was really wondering why my neighbors truck does this hiss. I walk by it every day. I nicknamed the truck whistling Dixie.

[@St4ked]

I would want hiss on my LLY dirtymax

[@hardware1197]

Nice overview

[@coolman4942]

If you change the vein position sensor do you have to get a re tune or is it fine to replace

[@desert_rat2831]

Thank you very much.

[@jimmienimble569]

Mannnn this is a BADD ASS TRUCK!!!!!!

[@NaztyNate]

Thanks man!

[@Danielmarksmusic]

What tune do you recommend purchasing for off-road diesels. I'm trying to get the Hissing sound, but all 5 of my tunes are the Rumble Idle

[@testdrivetech]

Nice job bro

[@leviwoodside4005]

What tuner do you have and what tunes.?

[@heliwrecker8649]

Do you find any turbo lag starting from stopped with the rumble tune?

[@NaztyNate]

Not at all. It changes almost instantly

[@michaellevenduski7263]

Again sound sick. Finally just picked up my 07. Any chance you can reply back with the tune they used being able to switch your hiss/rumble. Or to the right shop possibly. Thanks

[@NaztyNate]

I have ridge runner tunes

[@michaellevenduski7263]

@@NaztyNate awesome. Thank you very much

[@NaztyNate]

@@michaellevenduski7263 no problem! Any tuner should be able to do that if you ask

[@tristenh1516]

So I just got a lmm and it has both but no switches?

[@TheWalterHWhite]

What a chad.

[@NaztyNate]

Actually it's nate!

[@countryboys6252]

we just got a 2008 10inch lift and it was the hiss idle big time

[@procharged67]

who's tuned do you have ? truck sounds awesome

[@NaztyNate]

This was Ridge Runner but they don't do tunes anymore

[@michaellevenduski7263]

Nate ,,,sick truck bro. Want to trade lol. 02f350 dually lariat leather captains 7.3 powerstroke. Turn key. I'll deliver it.

[@justinlong977]

What exhaust are you using? I’m trying to find one for the same cab

[@NaztyNate]

I don't remember the brand, but they don't make a kit for the single cabs, just have to make it work

[@JUMANJI27G]

My LLY sounds like a F-22 Raptor, and my rumble sounds like your "hiss." What tune (programmer) did you use? Might want to look more into it. Beautiful truck tho bro!!!

[@Wretched2JZ]

Same here. Mines a stock turbo but it sounds like a jet!

[@antsinyopants9585]

What wheels are those and specs?

[@connorhughes9112]

Is yours a 305hp or 365hp lbz? Does your 60hp tune only bring you up to 07 classic tuning?

[@NaztyNate]

365...VIN code D is all 365

[@joshcrosland8733]

Is your LBZ ticking? Mine has a pronounced tick on the drivers side I havent been able to figure out.

[@NaztyNate]

It's a duramax thing LOL

[@joshcrosland8733]

@@NaztyNate it’s stopped me from making a sell and I had new heads and head studs put on 20k miles ago and everything lol.

[@NaztyNate]

@@joshcrosland8733 well they must've made that as an excuse. That ticking is a known thing for many Duramax owners. Some oils will make it more quiet but it's still there

[@NaztyNate]

@@joshcrosland8733 it's known as the "type writer tick"

[@joshcrosland8733]

@@NaztyNateAh I gotcha. Sketches me out lol

[@huntercardinale4842]

I have a 2005 duramax it has the lly and it is tuned and straight piped axle dump and it hiss and rumble mostly hiss tho

[@therealdeal1245]

So this morning i took my lbz out and it did both but now it doesn't. Whats wrong? i want to have both

[@NaztyNate]

It will do that when it's warming up, you have to have it tuned to do it when you want

[@att___]

my brothers lly will hiss/rumble depending on what tune he is on

[@tonygaza8276]

What suspension and wheels do you have? Truck looks sick!

[@NaztyNate]

Lowered 3 inches in the rear. The wheels in the video were 22x14 alcoa super singles from a semi truck machined down to fit normal truck tires

[@tonygaza8276]

@@NaztyNate thanks bro truck looks sick

[@NaztyNate]

@@tonygaza8276 I appreciate it man !

[@quentinl1003]

Who did you go with for your tune

[@NaztyNate]

Ridge runner moonshine tunes. I have a video of how you load the tunes also.

[@jacobfussner3117]

What is that tuning switch called that you have installed? Also Is it simple enough to install that a simple guy like me cud install it? Thanks! 😊

[@NaztyNate]

A DSP5 switch. I have a video on it. Its not bad to install

[@jacobfussner3117]

@@NaztyNate awesome thank you! So is there anything else I need to do after installing the switch or is that all there is to it?

[@NaztyNate]

@@jacobfussner3117 nope, add the switch, then tune it. You'll be good!

[@jacobfussner3117]

@@NaztyNate awesome! Thank you so much!

[@NaztyNate]

@@jacobfussner3117 no problem man!

[@jaredsandoval5823]

What wheels are those?

[@NaztyNate]

They are Alcoa super singles off a semi truck! They were machined down to 22 to run regular tires

[@dylanbaker5712]

What tunes are you running?

[@NaztyNate]

They are ridge runner tunes

[@thames7650]

With the lb7 if youd change the turbo wouldn't you be able to do this then? I've got a crew cab shortbed squarebody that I'm building and I'm building an lb7 for it, I want the rumble that you typically find in the lml

[@NaztyNate]

The lb7 has a rumble idle naturally. You'd have to put a VVT turbo on it to make it switch from rumble idle to hiss idle. The lb7 doesn't come with a VVT factory

[@thames7650]

@@NaztyNate alright, I've noticed the lb7 has more of a higher pitched rumble with more engine noise in the exhaust, I'd be looking for that lower pitched rumble, I'd looked into the stealth 64mm but can't find anything on how it effects the sound

[@awes0meguy13]

Functionally what is the difference though, like what are the benefits for each besides sound?

[@NaztyNate]

Nothing besides sound. Its tuned to go back to normal at 800 rpms so its just the idle sound.

[@awes0meguy13]

@@NaztyNate I see I see, thank you

[@duramaxdeere2497]

What the little button next to the switch for?

[@NaztyNate]

I believe you are seeing the screw that holds part of the dash together

[@duramaxdeere2497]

Oh ya that is just a screw!🤣🤣

[@Hickman-qd4qo]

My uncles truck is an lly and he has a hiss tune on his but won’t do the his at a regular idle and I had an lml that would hiss but it would do it on its own and I had no hiss tune just a plug and play tuner

[@quacky.-9696]

You can do this with any truck with a vgt turbo with efi live

[@NaztyNate]

Yup thats true! Its all in the tuning!

[@quacky.-9696]

@@NaztyNate only one problem with the hiss if you have a higher mileage truck even 200k like mine at idle the hiss vanes close and if they don’t open back up to the proper % after idle it can blow your turbo found that out from experience

[@TrevorSimko]

I've got a LBZ thats deleted and tuned with a DSP5 switch. I generally keep it on the fuel economy tune. Mine switches from hiss to rumble periodically while idling by itself. Is that normal?

[@NaztyNate]

Yes they do that from the factory to make sure the veins don't get stuck! It sounds crazy lol

[@Chris-us8yq]

@@NaztyNate love when my truck does that. It always happens after I start the truck up and let it idle after I have just have driven it.

[@stealthcon6975]

So my lly rumble and hiss off and on at idle annoys the shit out of me but it’s not tuned and only cat delete

[@toplineproductions4193]

My lly has no tune but it will randomly do this at idel or sometimes stop at a stop light it will hiss

[@NaztyNate]

Yup! That's normal! It's programed to cycle back and forth to make sure they don't stick.

[@6626BO]

Awe yes pavement princess at its best, that rumble sound all the way around the mall. It is all about the sound.

[@NaztyNate]

Gota love it staying clean

[@jackhiff5919]

Good stack it

[@jackhiff5919]

Hood

[@NaztyNate]

I really want to. I've been looking for a second hood to use

[@ridgedbullet2420]

Thought my 5.7 sounds like the rumble tune

[@rc_1996]

Makes me miss mine more and more. :(

[@Wongigigi]

I really want to run semi wheels but I don’t know where to get them milled or the wheel adapter

[@NaztyNate]

DK Dually King has you covered. He does it all

[@Wongigigi]

Nazty Nate I live in Idaho though

[@masonmcnabb2429]

Classically missing the tailgate handle bezel😂😂

[@NaztyNate]

Isn't every chevy 🤣

[@masonmcnabb2429]

@@NaztyNate Damn straight son, only Chevy i own that still gots it is my Tahoe😉😂😂

[@dakotamell2744]

Stock turbo yeah? Do you just have “box” tunes if so would you recommend them? I got a 07 lbz and still have stock trans

[@NaztyNate]

Yes sir stock lbz turbo. Highly recommend tuning it. I have Ridge Runner Moonshine tunes

[@jdutcher1157]

I quit listening when he said you couldn’t do that with an lly

[@JUMANJI27G]

VGT Learn.

[@__fu]

That wheel/tire selection was a mistake.

[@NaztyNate]

Lol!!

[@danedebar1752]

Hiss tune becomes so incredibly annoying

[@NaztyNate]

I agree, I kept it on rumble most of the time

[@kolbyhardy6563]

Those are the ugliest wheels I’ve ever seen, Jesus Christ

[@NaztyNate]

Hahahahaha thanks...😂

[@kolbyhardy6563]

@@NaztyNate I’m sorry for being an asshole but my god 😂😂 nice truck otherwise