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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 07-23-2008, 07:31 PM   eBay Motors   #1 (permalink)
Todd E
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For You LLY Owners

How many have installed a new mouthpiece/pipe to the turbo(specifically the one mentioned in discussions here)?

In an honest description, what did it do to your performance?

Are any details included w/the mouthpiece?

Ease of install?

You must understand that the more serious work... I do not trust myself and must find folks to work on it. I guess what I am saying is that I feel I need to change this out, but am wondering mostly about ease of install...............
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04.5 LLY 2500 D-Max Crew 4 x 4
PPE Economy Programmer on 45HP Tune
AEM Brute Force Intake
Killerbee modified mouthpiece
285s on stock rims w/no fender mods
Stanadyne Perf Fuel Additive
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Old 07-23-2008, 07:49 PM   eBay Motors   #2 (permalink)
bob213
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I put mine on TODAY. Can't say anything about performance because I haven't had a chance to test it out. I have stated in many posts "I am no mechanic" but this was really an easy install. Hardest thing was lining up the mouthpiece to get the V-band back on. Just by the looks there's a hugh difference in size.
Instructions are great along with photos. You might as well reroute your PCV and cap off your resonator while you have it apart.
I'll be towing this weekend so I'll let you know what I see in improvements.
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2005 GMC Crew Cab SLT 4X4
4" MBRP turbo back
Diablo Sport Predator/EGR Plate
BD Exhaust Manifold
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Induction Overhaul Kit by "Killer Bee" with
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Old 07-23-2008, 08:01 PM   eBay Motors   #3 (permalink)
Todd E
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Please do !!

Is there a lot to take out of the way to get to it?

Me and two buddies were looking at turbo tonight to see how difficult it is to get in there.

Did you buy kit or just mouthpiece?
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04.5 LLY 2500 D-Max Crew 4 x 4
PPE Economy Programmer on 45HP Tune
AEM Brute Force Intake
Killerbee modified mouthpiece
285s on stock rims w/no fender mods
Stanadyne Perf Fuel Additive

Last edited by Todd E : 07-23-2008 at 08:03 PM.
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Old 07-23-2008, 08:29 PM   eBay Motors   #4 (permalink)
bob213
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You remove original induction tube from airbox, then the resonator (black thing with 6.6 on it), pull the pcv valve out of the way and then use a screw driver to remove v-band on turbo. Goes back on in reverse order, just a tighter fit at the mouthpiece due to the larger size. Belive me...if I can do it, so can you. Have one of your friends hold the new mouthpiece in place while you tighten up the new v-band.
I never knew I could do so much on a vehicle, but with the help of all these guys on this forum, I've done more on this vehicle than I have on all the vehicles I've owned in the last 30 years. These guys are sharp. Just ask and you'll get all the instruction you need.
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2005 GMC Crew Cab SLT 4X4
4" MBRP turbo back
Diablo Sport Predator/EGR Plate
BD Exhaust Manifold
AutoMeter UltraLiteII Pyro Gauge
Induction Overhaul Kit by "Killer Bee" with
True CAI by "KillerBee" THANK YOU!!! Michael...
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Old 07-23-2008, 08:43 PM   eBay Motors   #5 (permalink)
Todd E
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Sent ya a PM. Thanks !!!
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04.5 LLY 2500 D-Max Crew 4 x 4
PPE Economy Programmer on 45HP Tune
AEM Brute Force Intake
Killerbee modified mouthpiece
285s on stock rims w/no fender mods
Stanadyne Perf Fuel Additive
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Old 07-23-2008, 10:09 PM   eBay Motors   #6 (permalink)
farmerkirkie
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Is the new mouth piece made with a less severe angle? It can't get much bigger around and still fit . I ported mine out today, haven't tested it yet. Working sealing up my air box better then see what happens. Let us know if it helped out.
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Old 07-24-2008, 05:24 AM   eBay Motors   #7 (permalink)
Hook'em_Horns!
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The 100 degree angle is still there, it's just that the inside corner has been expanded to smooth out the turbulance. You can see it pictured here:

http://members.cox.net/td-eoc/INDUCT...K%20PRIMER.doc

About a 1/4 of the way down is pictured 'Making of an airflow model'.
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2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab, 9 'Flat/GN, Ride-Rite Air, Sulastics, Bilsteins, A/T Revos, TTT towing mirrors.
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Old 07-24-2008, 07:04 AM   eBay Motors   #8 (permalink)
midieselguy
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I put mine on 2 day ago. I purchased the overhaul kit with the new mouthpiece. I feel the quality and fit was excellent. It took me twenty minutes to put it on. Only problem I had was dropping the torx bit somewhere on top of my engine where I still can't find it. Anyway, as far as performance, I still haven't towed but I'm getting about 1 mpg better since I change it out. I had already done the Hook'em Horns CAI mod. Can't wait to tow as I had overheating issues last time.
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2004.5 LLY, X-Cab, short-bed, Allison Trans, 4" MBRP Turbo-back, no cat, KB's IOH kit, EGR block plate, no finger stick, MB Razor 16x8 with BFG AT 285's
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Old 07-24-2008, 10:39 AM   eBay Motors   #9 (permalink)
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Talking

“Necessity is the mother of invention,” I find it very satisfying to see the average end-users overcoming the ‘engineered’ obstacles we are presented with…is this a Great Country or what?
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2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN, Ride-Rite Air...

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab, 9 'Flat/GN, Ride-Rite Air, Sulastics, Bilsteins, A/T Revos, TTT towing mirrors.
Use-ta Haves 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
. . . . . . . . . . .
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"
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Old 07-24-2008, 03:47 PM   eBay Motors   #10 (permalink)
bob213
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The link to the picture really doesn't do it justice. The new mouthpiece dwarfs the old. It is larger in diameter and carries that diameter a greater distance towards the airbox. The intake tube appears to be shorter to compensate for the larger mouthpiece. If I had an aftermarket intake I might be satisfied with porting out the mouthpiece, but Killerbee's new and improved version is pretty damn impressive.
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2005 GMC Crew Cab SLT 4X4
4" MBRP turbo back
Diablo Sport Predator/EGR Plate
BD Exhaust Manifold
AutoMeter UltraLiteII Pyro Gauge
Induction Overhaul Kit by "Killer Bee" with
True CAI by "KillerBee" THANK YOU!!! Michael...
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