downpipe? - Chevy and GMC Duramax Diesel Forum

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post #1 of 11 (permalink) Old 02-03-2013, 06:02 PM Thread Starter
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downpipe?

Hey guys, I was thinking about ordering a mbrp 3 inch downpipe. Just wondering if anyone has one of these and if it made much difference in power and sound?
Thanks.

2005 lly duramax 4 door 2500hd: PPE boost, pyro, and rail pressure gauges, lbz mouthpiece, egr blocker plate, 5 inch mbrp downpipe back exhaust. 20" xd hoss black wheels, 33" toyo M/Ts, Rough country leveling kit.
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post #2 of 11 (permalink) Old 02-03-2013, 07:12 PM
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don't get mbrp get a profab downpipe they are much cheaper and better imo. as for sound and performance, you will get a deeper sound (no more angry owl at WOT) and it will lower your egts a bit

04.5 LLY Chevy CC/SB LT 4x4 Olympic White | candy purple suspension and other things, colormatched, lift kit, American forces, exhaust, engine mods, interior mods, exterior mods |
04.5 LLY Chevy CC/SB LT 4x4 Silver Birch Metallic (~210K) RIP Dec 2013
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post #3 of 11 (permalink) Old 02-03-2013, 07:31 PM
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Get de not mbrp

2007.5 Chevy 2500HD -- EFI Live by Kory Willis/DSP5 -- 4" MBRP turbo back w/ Muffler -- Diamond Eye Downpipe -- EGR Blocker Plate -- Nictane W/ Cat filter -- Edge Insight W/ EGT -- GM power Steering Cooler -- Firestone Riderite Bags -- 265/75/16 KO2's W/ leveling kit -- Kryptonite UCA's -- Rancho RS9000xl's
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post #4 of 11 (permalink) Old 02-03-2013, 07:35 PM
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I got the pro fab down pipe. I will be driving it on tuesday. I will let you know what i notice.

Clint

2006 LBZ Crew Cab LT DRW 4X4
dropped 4"lift on Cooper Discoverer at3 285/75r16 on black ultra goliaths, PCV rerout, resonator delete, EGR Blocker plate, Painted to match:front bumper, front fender flares, tow mirrors, escalade door handles. Pro fab down pipe, MBRP 4inch strait pipe with dual 6" matched stacks, auto meter cobalt guages (pyro, fuel pressure, rail pressure, boost),PPE Boost Controller, Cobra 29 LX CB, diamondplate bed rails, Pro tech louvered headach rack, 96 inch traction bars, built front end, built transmission, adjustable bump stops, efi live, elocker in the front.
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post #5 of 11 (permalink) Old 02-03-2013, 07:36 PM
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Quote:
Originally Posted by dirtypower04.5 View Post
don't get mbrp get a profab downpipe they are much cheaper and better imo. As for sound and performance, you will get a deeper sound (no more angry owl at wot) and it will lower your egts a bit
this^^^^^^^^^^

-Robert-
2005 CCSB Silverado 2500 HD LLY
Performance: LBZ Mac performance intake, LBZ mouthpiece, MBRP duals, shim kit, ported fuel rail fittings, headstuds, FASS150, FASS fuel filter delete bowl, LBZ FPR, EFI live by Idaho Rob
Air Flow:finger vanes, ported turbine housing, BatMoWheel, losend unison ring, ported exhaust manifolds, gasket matched up-pipes
Exterior: Rear Reunel bumper, leveled tow mirrors, HIDs (all on mod), ADP tie-rod sleeves, green tinted headlamp housings
Interior: 2 12" memphis car audio subs, custom sealed box and 2000 watt memphis amp, LED interior, dash and door lights-green, cobalt autometer pyro and boost piller gauges
Best Time: 13.92 @ 95 mph 1.96 60 foot
Work In Progress: 1969 Chevy Nova, built turbo 350, 283ci small block est. 550hp with 7500 rpm redline, caltracs, 4.11 ford 9" rear end, dual 3"exhaust
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post #6 of 11 (permalink) Old 02-03-2013, 07:50 PM
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My lml sounds like an angry mountain lion.........I love it So if I change out dp I will loose that?

2011 GMC 3500HD SLT 4x4 DRW CC STORM GRAY/CASHMERE
HS minimax 5' mbrp
2009 CAN AM OUTLANDER 800R (too much to list)
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post #7 of 11 (permalink) Old 02-03-2013, 07:52 PM
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post #8 of 11 (permalink) Old 02-03-2013, 08:28 PM
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Quote:
Originally Posted by willsdiesel View Post
My lml sounds like an angry mountain lion.........I love it So if I change out dp I will loose that?
Yes

2004.5 LLY ECSB 4X4
EFI Live
Danville Stg2r
Bosch Motorsport 65% overs
MA700 Trans
Lots of HSP Diesel parts!
ARP Studs
Built Front End
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post #9 of 11 (permalink) Old 02-04-2013, 05:35 PM
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^x2 on that

04.5 LLY Chevy CC/SB LT 4x4 Olympic White | candy purple suspension and other things, colormatched, lift kit, American forces, exhaust, engine mods, interior mods, exterior mods |
04.5 LLY Chevy CC/SB LT 4x4 Silver Birch Metallic (~210K) RIP Dec 2013
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post #10 of 11 (permalink) Old 02-07-2013, 09:36 PM
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I'm glad to hear that the downpipe gets rid of the "angry owl!" Whenever I get time and the money, I'm going to get the Pro Fab downpipe along with the Diamondeye 4" quiet tone exhaust. I want the performance without more sound.

2007 GMC SLT Classic, 2500HD CCSB
Edge Insight CTS w/EGT Probe
EFI Live w/DSP5 switch by Duramaxtuner.com (Nick)
Pullrite Superglide 5th Wheel Hitch / DMI Quic 'n Easy Receiver Hitch
Transgo Jr./Allison Filter Lock
HD SynTran Tranny Fluid (John Deere's Syndtran)
Mike L. Transmission Cooler
Diesel Race Parts replacement Tranny Cooler Lines
2015.5 Style Tow Mirrors w/Dual Function LED's and reverse LED's
3" AFE Downpipe & 4" AFE Stainless Steel Exhaust, AFE Intake Manifold, AFE Momemtum HD Dry Intake
18" x 9" Ultra Predator 8 Wheels / Cooper Discoverer AT3 275/65 R18 Tires
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