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| 06-07.5 LBZ & LLY Performance Parts Discussion Discussion of Performance Parts For the 06-07.5 LBZ/LLY Duramax Trucks No Advertising |
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12-26-2012, 05:09 AM
| eBay Motors #1 (permalink) |
| Junior Member Join Date: Dec 2012 Location: Champaign, IL
Posts: 50
| '07 LBZ Best Exhaust Mods New to the forum, and I'm trying to decide how best to spend my Christmas money for the 2007 CCSB I purchased a month ago. The truck is all stock and I will be pulling a 10,500 lbs fifth wheel camper with mom and the kids. I want to add a performance exhaust without too much noise. I'm thinking of the DE quiet tone downpipe back exhaust with muffler. Any thoughts on that or other suggestions? Also, would a 3" downpipe add much noise? And if not, then which downpipe is best for fitment? I've read that they are now leaving the tab that bolts the downpipe to the exhaust manifold off. Is that ok? Future mods will be a transgo jr. kit and EFI Live by Nick. Thanks!
__________________ 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 Leveled Tow Mirrors |
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12-26-2012, 06:16 AM
| eBay Motors #2 (permalink) |
| Some Newfie with a dmax   Join Date: Aug 2010 Location: newfoundland
Posts: 3,595
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__________________ 06 lly, Black, Levelled, Efi by rob, 5" Etc. |
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12-26-2012, 07:53 AM
| eBay Motors #3 (permalink) |
| 812-344-4421   Join Date: Mar 2008 Location: Indiana
Posts: 13,386
| The Diamond Eye QT exhaust is a great choice if you want to keep it quiet. Adding a down pipe won't increase your sound much. I would go with a Pro Fab DP. It has a tab that mates up and works. |
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12-26-2012, 11:55 AM
| eBay Motors #4 (permalink) |
| Junior Member Join Date: Dec 2010
Posts: 78
| I recently purchased and installed 4 inch straight pipe on my 07 Lbz and surprisingly enough it does not have much drone in the cab at all even when towing a heavy load. It sounds like a screaming fifteen year old girl though. Your turbo will be surprisingly loud. A down pipe will get rid of that Lbz turbo hiss though.
__________________ 2003 EX BORDER PATROL LB7 Duramax/allison. Completely stock except for edge cts and offroad package border patrol upgraded it with. EC/SB  - sold2007 lbz duramax lt ec/sb - bone stock 192000 miles.  |
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12-26-2012, 11:56 AM
| eBay Motors #5 (permalink) |
| Junior Member Join Date: Dec 2010
Posts: 78
| Mine is an mbrp turbo back straight pipe and I believe it cost right at 3 hundred bucks.
__________________ 2003 EX BORDER PATROL LB7 Duramax/allison. Completely stock except for edge cts and offroad package border patrol upgraded it with. EC/SB - sold2007 lbz duramax lt ec/sb - bone stock 192000 miles. |
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12-26-2012, 12:24 PM
| eBay Motors #6 (permalink) |
| Junior Member  Join Date: Mar 2011
Posts: 46
| I have a full stainless magnaflow with muffler, 4 inch, and its not to loud at all. The tone is nice when you get on it but fairly quiet at idle or easy throttle. Nice system.
__________________ 06 CCSB 4x4 rancho lift/magnaflow stainless/trans go/efi by Rob/egr blocked/pcv reroute/trans lines... more to come! 05 Cummins 4x4 silver short bed/road armor/smoked cab lights/edge J/A/ISSPRO gauges/straight pipe/H2's with 35" Hankooks/a few Carli goodies/08.5 steering linkage/red head gear box. SOLD |
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12-26-2012, 12:39 PM
| eBay Motors #7 (permalink) |
| Junior Member  Join Date: Mar 2010 Location: yucaipa
Posts: 166
| i agree on the magnaflow 4" the best fit easiest to install and also the most quiet. shes only loud if you get on it.Ive installed silverline on my dads lbz and a mbrp on on a ford all were turbo back the silverline came into contact with the body and i had to mash up the heat shielding on the bottom of the bed to keep it from ratling when the exhaust got hot. The mbrp was a nice kit but hard to work with due to it being aluminized. . if you decide to go aluminized make sure you you test fit it all first cuz once those clamps are on thats it there not coming off. |
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12-26-2012, 01:20 PM
| eBay Motors #8 (permalink) |
| Junior Member  Join Date: May 2012 Location: Slatington, PA
Posts: 112
| I have a dual 4in DE with 3in downpipe. It is not too loud at all. It has barely any cab noise when cruising but when you get on it, its loud!
__________________ 2007 CHEVY 2500 HD CCSB LBZ EGR-Blocker, PCV Re-route, Modded Airbox, DE Dual 4in Turbo back, DE 3" Downpipe, Transgo Jr, EFI-Live from Hassler Diesel, Air Dog 165, PPE race valve |
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12-26-2012, 07:54 PM
| eBay Motors #9 (permalink) |
| Junior Member Join Date: Dec 2012 Location: NW iowa (boyben)
Posts: 55
| What will a down pipe gain me? would it be a good addition to the mods in my sig? or wont it help me? sorry im new to the diesel world
__________________ 2004.5 lly CC/SB LT white 147k : EFI Live DSP5 Tuned by Kory : Georend transmission : Stright piped 4in MBRP turbo back exhaust : Pro fab down pipe : EGR Block plate : AFE mouth piece : raptor lift pump : CAT Nicktane adapter : Rare parts tie rods : Traction bars |
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12-27-2012, 05:42 AM
| eBay Motors #10 (permalink) | |
| Senior Member  Join Date: Feb 2011 Location: south jersey
Posts: 509
| Quote:
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__________________ 2006 chevy lbz CCSB LT3 4" turbo back mbrp 3" mbrp downpipe s&b cold air kennedy diesel egr block Black american racing atx mojave 16x8 wheels 285 nitto terra grapplers dsp 5 tunes by idaho rob autometer c2 egt and boost gauges flipped trans cooler More to come... | |
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