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06-03-2007, 03:07 PM
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eBay Motors
#1 (permalink)
| | Junior Member
Join Date: May 2007 Location: Mountains of VA
Posts: 7
| Quiet performance exhaust?
Does anyone have any experience with a performance exhaust system for a 2007 GMC classic with an lbz duramax that is quiet while towing. The last two vehicles I have towed with had performance exhaust and here it the mountains they were both too loud for the family to enjoy the trip. One had magnaflow and the other had Borla. The were both gas engines but had a terrible harmonic in the cab while under a high load. I have heard the Diesels are actually worese for this than a gas engine. Thanks, Paul. | 
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06-03-2007, 03:41 PM
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eBay Motors
#2 (permalink)
| | Diesel Performance
Join Date: Jun 2006 Location: Sacramento, CA
Posts: 991
| With your turbo, the MBRP kits are very reasonable, and I have found the only complaints are that they are too quiet. I recently did a muffler removal for a customer who wanted a little more sound. I think you will be very pleased with the sound and better performance.
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06-04-2007, 09:14 AM
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eBay Motors
#3 (permalink)
| | Junior Member
Join Date: May 2007 Location: Arizona
Posts: 5
| My neighbor just put the Banks duals on his 07 LBZ, it sounds just a little louder than my stock LBZ, but it is not loud. I don't think the diesel will be as loud as the gas motors. | |
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06-04-2007, 09:23 AM
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eBay Motors
#4 (permalink)
| | LIL Kahuna
Join Date: Jan 2006 Location: Kingston, WA
Posts: 354
| Yeah if you run a muffled 4'' system it wont be very loud at all but it will flow and sound alot better.
__________________ Dads: 99 2500 Ext Cab Longbed 4X4 3.55s CTD, 5'', 47re, BHAF Outerwear Heat Sheild, Turnbuckle Wastgate, Fuel Pressure, Sucnoast Tripple Disk TC with custom vb work.
Mine: 95 Ext Cab SLT, Loaded, 5spd, 3.54s, Leveled 5'' Lift 35'' Toyos, 4'' Straight, Super B 57/66/14, Stage 2 Sticks, 3GSK, #60 Valve Springs, Stage 2 clutch, Custom Intake, Plateless,Boost and EGT on the pillar. | |
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06-04-2007, 12:58 PM
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eBay Motors
#5 (permalink)
| | Member
Join Date: Apr 2007 Location: Union Grove, NC
Posts: 37
| I recently installed a 4" Stainless MBRP system on my 07 classic ( turbo back)
cat removed with MBRP muffler. Very little(if any) difference inside the cab even with a load.
Outside the cab its alot deeper exhaust note ,but not much louder. More turbo whistle outside. Very little inside.
Eric
__________________ White 07 Classic 2500/(3500 BED): HD CC Longbed  LBZ, Alice in 6 wonderlands  ,
MBRP 4" SS Turbo Back  , Motto 954 17 x 8 wraped with BF 285s black walls of course  , Raptor Nurf Bars, B&W Turnaball | |
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07-12-2008, 08:26 AM
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eBay Motors
#6 (permalink)
| | Junior Member
Join Date: Jul 2008 Location: North Dakota
Posts: 12
| Does the 2006 LBZ have any sensors on the cat to worry about? I am going for the muffled 4" turbo back system next week. It shows on my profile now.
__________________
2006 2500HD Crew Cab LBZ LT3
Dark Ming Blue Metallic
Leer Canopy, Stock at this point
4" MBRP turbo down exhaust, straight thru Turbine muffler
AstroStart remote start w/full function remote | |
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07-12-2008, 09:20 AM
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eBay Motors
#7 (permalink)
| | Duramax Forum Supporter
Join Date: Apr 2008 Location: South east GA, Kings Bay
Posts: 60
| I have an 06 2500 HD with an LBZ motor. I installed a MBRP 4" turbo back sysytem (with a muffler) and removed the cat. found no difference in the cab, but it sure breathes better!!! | |
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07-12-2008, 09:21 AM
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eBay Motors
#8 (permalink)
| | DF Sponsors
Join Date: Mar 2008 Location: Columbus,IN
Posts: 2,161
| no but some of them throw a code and some dont its a hit or miss on that year.
__________________ 07.5 Chevy Summit White Reg cab LMM, Quadzilla steath 2, 5" MBRP straight pipe, 5" turn-down DPF Deleted, Cobalt boost & pyrometer, line of fire and ice. Meyer Performance & Fabrication, LLC Home of your diesel performance needs. www.meyerperformance.com (812)-344-4421 Tyler | |
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07-12-2008, 09:42 AM
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eBay Motors
#9 (permalink)
| | Junior Member
Join Date: Jul 2008 Location: North Dakota
Posts: 12
| Can a dealer tell by the VIN?
__________________
2006 2500HD Crew Cab LBZ LT3
Dark Ming Blue Metallic
Leer Canopy, Stock at this point
4" MBRP turbo down exhaust, straight thru Turbine muffler
AstroStart remote start w/full function remote | |
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07-12-2008, 09:43 AM
|
eBay Motors
#10 (permalink)
| | Junior Member
Join Date: Jul 2008 Location: North Dakota
Posts: 12
| And what do I do to solve the issue if there are sensors?
__________________
2006 2500HD Crew Cab LBZ LT3
Dark Ming Blue Metallic
Leer Canopy, Stock at this point
4" MBRP turbo down exhaust, straight thru Turbine muffler
AstroStart remote start w/full function remote | |
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