How loud is straight pipe sound from in cab

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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Mon Feb 15, 2016 9:01 pm

I actually like the racket of stock diameter straight pipe for the 24V's. Oh and I straight piped mine :lol:

baaaaw
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: How loud is straight pipe sound from in cab

Postby DMan1198 » Tue Feb 16, 2016 5:02 pm

Mine was never very loud even at wot with a single turbo. Now it's almost whisper quiet out the exhaust with the compounds (this is with the exhaust pointing towards the drivers side, and exiting just above the frame in the engine bay) couldn't really hear it at wot either. The Roo Hunter actually rattles less than my 6.7 on a single event tune
Ducati- professional nap taker, and thread derailer extraordinaire
Brownie: 80 dodge heavy half. Ghost cummins under the hood, and some sinister plans
The Roo Hunter: 93 w250, lifted, 2 whistle machines, and a bunch of other go fast goodies, uhh..... not there yet
Jaeger: 12 ram 3500. Lifted, exhausted, and fed an excessive quantity of air
The Huntress: 02 Jetta TDI. No muffler, egr, horsepower
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Tue Feb 16, 2016 6:22 pm

Bet there will be some rattlin when she gets advanced! :D
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Tue Feb 16, 2016 6:24 pm

Is there any difference in exhaust note with a single injection event?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: How loud is straight pipe sound from in cab

Postby DMan1198 » Tue Feb 16, 2016 6:45 pm

There is not.

Possibly, but my 6.7 is only running 8* at idle at 9000psi rail pressure
Ducati- professional nap taker, and thread derailer extraordinaire
Brownie: 80 dodge heavy half. Ghost cummins under the hood, and some sinister plans
The Roo Hunter: 93 w250, lifted, 2 whistle machines, and a bunch of other go fast goodies, uhh..... not there yet
Jaeger: 12 ram 3500. Lifted, exhausted, and fed an excessive quantity of air
The Huntress: 02 Jetta TDI. No muffler, egr, horsepower
DMan1198
14mm rotor
 
Posts: 2177
Joined: Sat Aug 10, 2013 6:26 am
Location: Slave Lake, Alberta
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Re: How loud is straight pipe sound from in cab

Postby wheelerfreak » Sun Feb 21, 2016 11:02 pm

I had a diamond eye straight pipe set up and I thought it was obnoxiously loud. With the windows up inside the truck it wasn't bad around town, but with the window down when driving along a wall or line of buildings it was too loud. I can only imagine how bad it was for those that had to listen to my truck. I slide my truck into a snow bank and kinked the exhaust where it goes over the axle and had to cut it off just prior to that, it was even worse at highway speeds. I finally got the DE muffler and can honestly say it is much better like that. I don't fell like I'm losing my hearing after long highway drives and can enjoy my stereo. I don't feel like I lost any power with the muffler and can say now that I feel like I'm not waking the dead as I drive it.
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Mon Feb 22, 2016 8:33 pm

Is a 4" system that much louder than factory diameter?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: How loud is straight pipe sound from in cab

Postby wheelerfreak » Tue Feb 23, 2016 3:33 pm

Factory had a muffler, so any system without a muffler will be louder, 3,4,5", whatever. Obviously too loud is an individual thing. For me, the 4" straight pipe was too loud. On long highway trips, which is most of the use my truck gets, it was loud enough in the cab to get annoying and overpower the radio. Around town it wasn't too bad at low speeds, but to those outside the truck it was annoyingly loud as well. I got the chance to listen to it when my wife was driving home on our long driveway. If you don't care how loud your truck is outside, then I guess it's fine. I live in a very rural area, and even with my nearest neighbor 1/4 mile away, I'm sure he could hear me coming home. I finally added the muffler to my 4" Diamond Eye system and am happy with the sound of it with a muffler.

As to a 4" muffled system Vs stock, I can't say since my truck had an aftermarket 3" system on it when I bought it.
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Re: How loud is straight pipe sound from in cab

Postby PToombs » Tue Feb 23, 2016 4:23 pm

A larger diameter system will have a deeper tone than a smaller one, just like gasser cars. Smaller is rappy, larger is deep and throaty.
pete

Just enough power to break everything behind the crankshaft.
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Tue Feb 23, 2016 8:41 pm

Alright.
Like flipping a switch, exhaust note becomes much more noticeable as soon as I hit 1750 rpm, is that just resonance in the piping? I don't mind since it isn't overly loud to me
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: How loud is straight pipe sound from in cab

Postby DMan1198 » Wed Feb 24, 2016 1:39 am

Most likely yes.
Ducati- professional nap taker, and thread derailer extraordinaire
Brownie: 80 dodge heavy half. Ghost cummins under the hood, and some sinister plans
The Roo Hunter: 93 w250, lifted, 2 whistle machines, and a bunch of other go fast goodies, uhh..... not there yet
Jaeger: 12 ram 3500. Lifted, exhausted, and fed an excessive quantity of air
The Huntress: 02 Jetta TDI. No muffler, egr, horsepower
DMan1198
14mm rotor
 
Posts: 2177
Joined: Sat Aug 10, 2013 6:26 am
Location: Slave Lake, Alberta
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Wed Feb 24, 2016 9:58 am

Ill probably grow out of it, but I love tunnels
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
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Re: How loud is straight pipe sound from in cab

Postby DMan1198 » Wed Feb 24, 2016 10:51 am

If you do you can always just add another turbo to the mix, and she'll quiet right down
Ducati- professional nap taker, and thread derailer extraordinaire
Brownie: 80 dodge heavy half. Ghost cummins under the hood, and some sinister plans
The Roo Hunter: 93 w250, lifted, 2 whistle machines, and a bunch of other go fast goodies, uhh..... not there yet
Jaeger: 12 ram 3500. Lifted, exhausted, and fed an excessive quantity of air
The Huntress: 02 Jetta TDI. No muffler, egr, horsepower
DMan1198
14mm rotor
 
Posts: 2177
Joined: Sat Aug 10, 2013 6:26 am
Location: Slave Lake, Alberta
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Re: How loud is straight pipe sound from in cab

Postby spencerdiesel » Wed Feb 24, 2016 1:24 pm

Type up something official looking that I can hand to my woman saying an S362 is mandatory for my sanity :D
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
Muffler delete
spencerdiesel
14mm rotor
 
Posts: 1037
Joined: Tue Oct 27, 2015 4:02 pm
Location: Brevard, NC
Top

Re: How loud is straight pipe sound from in cab

Postby PToombs » Wed Feb 24, 2016 3:31 pm

Dear Spences' Mom,

Due to a recent development at his last physical it has been determined that he needs to be limited on his exposure to loud noises. Thus we find it necessary that a larger turbocharger sound arresting device is needed on his vehicle.

Dr. Diesel Pheelgood, MD.
pete

Just enough power to break everything behind the crankshaft.
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PToombs
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