8" exhaust... no problem!

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Old Aug 27, 2020 | 07:40 PM
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Cool 8" exhaust... no problem!

1st off... holy OLD *****, Batman! The Cummins side of the house is a ghost town! Maybe we can liven up the place.

2nd-ly, I didn't want to leave folks hangin' after droppin' a teaser (linked here) regarding bumping Samson up to 8" exhaust. Granted, it obviously ain't a full 8" system, but I did manage to tuck a 3ft stack up under there and keep it super-stealth... at least until I start it up.

There's actually room enough to've done a 48" or even 60" stack dumped in front of the axle, but for $90 vs $190+, the 36" was enough for my little experiment.

Enough yammerin'... here's how it turned out:

You can barely notice from the side unless you know what you're looking for.



And connected to the 4" pipe in place of the MBRP muffler (connection straight underneath the back seat):

Size of the 45° miter cut opening (my span's almost 9").


You see all these YouTubez idiots raving about how their 8"x15" tip made their full exhaust SOOOO much louder & deeper - those ain't got s#!t on this... but truth be told, it ain't really that much different or crazy. Maybe it's 'cause they're mentally comparing it to a Civic or something, but compared to running with the muffler removed (just an open 4" straight pipe under the back seat) it's a little bit louder, definitely deeper, and added a drone from ~2000-2800rpm (peaking at 2500) that wasn't there before. The exhaust brake sounds about the same - like a jet engine.

No video (for now at least) because my little point-&-shoot polaroid camera's microphone sucks & wouldn't be worth listening to.
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Old Aug 27, 2020 | 09:15 PM
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Its nice to see something new. All the diesel exhausts I see around here are 5" straight pipe to 8" or bigger tips dumped over the axle. Yours looks sleek and incognito!
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Old Aug 28, 2020 | 01:44 AM
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thanks, man.
i always thought the giant-tip-hanging-out look was retarded & wanted something more inconspicuous but still deep and rumbly.

when i bought the truck, it already had a nice MBRP deleted exhaust... it's just too smooth/quiet for mine & my wife's tastes. when i originally mis-measured & thunk it was 3.5", i looked at a couple 5" setups, but after realizing i actually have a 4", it sure wasn't worth $600 for negligible gain when 4" will more than support an S480 over stock compound setup and 700+ hp.

so last week, i just popped the muffler off to see how 'bad' it was... which wasn't too terrible, so then i looked for a turn-down tip to point it down & out from under the cab but was a little bigger to give it some growl... which led to a 6"x48" stack i started to measure out but couldn't bring myself to pay $2xx for it. that's when i stumbled on this little eBay gem for less than half that - i just had to decide between 7" or 8" diameter... so like my wife told me, "go big or go home".


granted, she did threaten this morning to go cold-start the truck one day when i'm trying to sleep
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Old Aug 28, 2020 | 12:10 PM
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Definitely isn’t as bad as some of the **** I see.

Curious how it sounds.

Way better than this:


Stock exhaust with a massive tip. For no reason. Lol
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Old Aug 28, 2020 | 12:17 PM
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I despise giant tips hanging out like that, If they ever actually went off-road they would end up smashing it or ripping it off.
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Old Aug 28, 2020 | 12:27 PM
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Originally Posted by dantheman1540
I despise giant tips hanging out like that, If they ever actually went off-road they would end up smashing it or ripping it off.
Especially on a stock exhaust. And essentially stock ride height.

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Old Aug 28, 2020 | 12:33 PM
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BuT iTs A DuRtY mAx WiTh AlLiSoN sO ItS a BeAsT.


Samson looks really clean under neither how do you like the coil spring rear?
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Old Aug 28, 2020 | 01:16 PM
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yep - can't have it hanging out all -like or snagging on crap, so that's why i made sure it'd tuck up by the frame rail.

the coils ride pretty nice - much smoother than Penny was the last few years (granted that was due to still having Bilstein HDs after swapping to stiff 8ply 33s on a 4500lb truck).
makes me glad i didn't get a 3500 with leafs.
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Old Aug 29, 2020 | 03:12 AM
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only took 12hrs to figure out how to get this from camera to interwebz
https://app.photobucket.com/u/zebra-...2-b7263434925a
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Old Aug 29, 2020 | 12:17 PM
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Maybe I'm looking at it wrong but all I see is 1 picture of Samson and then some other random pictures no videos or sound clips.

Did you know they make a portable handle held device that can record video and upload it in just a few minutes.
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