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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 04.5-05 LLY Forum > 04.5-05 LLY Performance Parts Discussion
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04.5-05 LLY Performance Parts Discussion Discussion of Performance Parts For the 04.5-05 LLY Duramax Trucks No Advertising

 
       

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Old 09-02-2008, 12:30 PM   eBay Motors   #1 (permalink)
05 3500 2wd
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BD Exhaust Manifold

I was wondering who has installed these and how much difference did you see with it. Did you think it was worth the cost? Did you get it directly from BD or from one of our fellow site supporters.
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Clifford is a 2005 GMC Loaded SLT 2wd with; Killer Bee true cold air intake and ported LBZ intake overhaul kit, FAE Inter cooler pipe, Diamond Eye down pipe, BD drivers side manifold, Silverline 4" S/S straight piped exhaust, EGR Blocked, PPE On level 2, Bully Dog pillar mounted outlook monitor, 19.5" aluminum wheels with factory lug covers, Goodyear G647RSS 225/70/19.5, BFXenon 6000k Headlights Low & Hi, Air lift Remote control 5000# air bag system, Rear mounted under the bumper halogen lights, EX down Tailgate assist, Put co S/S mud flaps, compete interior wood dash kit, Dual Liner 3 piece bed liner with rubber floor mat, Roll-N-Lock tonne cover with tail gate lock, and AVS in channel vent visors.
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Old 09-02-2008, 12:37 PM   eBay Motors   #2 (permalink)
Meyerperformance
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I talked to BD last week about the manifold, and the rep told me its the best mod most people dont do, and its mostly going tohelp overall efficiency, and the BD design is so much more free flowing than stock. If need price in the future let me know.

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Old 09-02-2008, 02:16 PM   eBay Motors   #3 (permalink)
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i did it, got it local. overall i think it should be one of the first things that should be done. for around $300 it is worth it. i will tell you that it is very easy to install, but i did it when my truck only had 15,000 miles.
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Old 09-02-2008, 02:39 PM   eBay Motors   #4 (permalink)
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If it was easy with only 15000 then mine should almost do it for me cus mine only has 6700.0 miles on it.
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Clifford is a 2005 GMC Loaded SLT 2wd with; Killer Bee true cold air intake and ported LBZ intake overhaul kit, FAE Inter cooler pipe, Diamond Eye down pipe, BD drivers side manifold, Silverline 4" S/S straight piped exhaust, EGR Blocked, PPE On level 2, Bully Dog pillar mounted outlook monitor, 19.5" aluminum wheels with factory lug covers, Goodyear G647RSS 225/70/19.5, BFXenon 6000k Headlights Low & Hi, Air lift Remote control 5000# air bag system, Rear mounted under the bumper halogen lights, EX down Tailgate assist, Put co S/S mud flaps, compete interior wood dash kit, Dual Liner 3 piece bed liner with rubber floor mat, Roll-N-Lock tonne cover with tail gate lock, and AVS in channel vent visors.
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Old 09-02-2008, 02:52 PM   eBay Motors   #5 (permalink)
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I have one and I installed it and the Diamond Eye Turbo Direct Pipe at the same time. Those two mods together gave me about a 300 degree egt drop on the drag strip.

05 3500 2wd: your 05 only has 6700 miles on it?
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Old 09-02-2008, 03:24 PM   eBay Motors   #6 (permalink)
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Please forgive me but what is the Diamond Eye Turbo Direct Pipe and where do you get it?
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Clifford is a 2005 GMC Loaded SLT 2wd with; Killer Bee true cold air intake and ported LBZ intake overhaul kit, FAE Inter cooler pipe, Diamond Eye down pipe, BD drivers side manifold, Silverline 4" S/S straight piped exhaust, EGR Blocked, PPE On level 2, Bully Dog pillar mounted outlook monitor, 19.5" aluminum wheels with factory lug covers, Goodyear G647RSS 225/70/19.5, BFXenon 6000k Headlights Low & Hi, Air lift Remote control 5000# air bag system, Rear mounted under the bumper halogen lights, EX down Tailgate assist, Put co S/S mud flaps, compete interior wood dash kit, Dual Liner 3 piece bed liner with rubber floor mat, Roll-N-Lock tonne cover with tail gate lock, and AVS in channel vent visors.
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Old 09-02-2008, 03:30 PM   eBay Motors   #7 (permalink)
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Its the actual down-pipe that connects the turbo to the front pipe, and any vendor can get it.

Tyler
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Old 09-02-2008, 03:32 PM   eBay Motors   #8 (permalink)
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The diamond Eye turbo direct pipe is the actual turbo downpipe that the other exhaust kits leave out. It's kinda a pain to install, so unless you are gonna be doing racing or sled pulling i would not suggest it. Here is a link to their site: Diamond Eye Performance, LLC I got mine through a site vendor.

Here is a link to a thread that has some pics of the stock vs. diamond eye: http://www.duramaxforum.com/forum/01...rect-pipe.html
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Old 09-02-2008, 05:17 PM   eBay Motors   #9 (permalink)
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does a bd exhaust manifold give any more power??? i ask this because you have less backpressure and more flow right???
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Old 09-02-2008, 05:20 PM   eBay Motors   #10 (permalink)
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Its increase flow and and lowers egt's, and you might see a slight increase in power but nothing to write home about.
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