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| 06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect |
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05-08-2007, 06:15 PM
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eBay Motors
#1 (permalink)
| | DuramaxForum Fanatic
Join Date: Mar 2007 Location: Kirklin, IN
Posts: 532
| Stutter??
I've noticed when I'm following someone at about 50-60mph, I go to floor it and pass them The truck seems to drop off for a split second then it comes alive and then it goes like crazy. I've noticed this since I've added the PPE. I don't have an intake and wonder if its not getting the air? Any ideas??
Ryan
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Silverline 4" Turbo Back ss system w/Hushpower muffler. PPE Excelerator Hot + 2(set on 350), Bugshield, and grille insert. SCIV and 1058(Fleece Performance), HP 150 lift pump, Auto meter gauges and pod, EGR Blocker and FRPV shim kit,   | 
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05-08-2007, 06:23 PM
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eBay Motors
#2 (permalink)
| | Gear Jammer...
Join Date: May 2006 Location: Mt. Pleasant PA
Posts: 1,888
| Im not real sure on this but the few tuned LBZs i have ridden in have a horrible shift defuel casusing a hesatation befor the down shift. The added fual of the tuner magnifys the defueling making it more noticeable with the tuner!!!! Also could be turbo lag but that shouldent be programer related?
__________________ 05 Chevy 2500HD dark blue reg cab ZF-6 speed/W South Bend Clutch ,Power by EFI Live W/Dsp2 , PPE GT4094R, ATS CP3x2, Modified Volant intake, MBRP front pipe, 4" side pipe, Holley Blue lift pump, Isspro gauges,Cognito Braces, SD Centerlink, Caltracs, ATS Tie Rod Sleeves Best ET 12.53@ 109 mph 04.5 Chevy 2500HD, silverbirch, D/A, CC/SB , EFI live, SCIV w/ATS 5Star converter,McRat shim mod, Wicked Diesels modded FPR, Kennedy dual lift pump, Modified Volant intake, Cognito Braces,CUD tie rod Sleeves, EGR BLocker,Diamond eye Down pipe, 4" dual exhaust, Elocker, MA Tcase Fix, B&W GN Hitch Best ET 13.53 @ 101mph | 
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05-08-2007, 06:39 PM
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eBay Motors
#3 (permalink)
| | DuramaxForum Fanatic
Join Date: Mar 2007 Location: Kirklin, IN
Posts: 532
| I was just wondering. If I'd get a beefier tranny and take off the defuel, would that help with that? I'm only running it on 90 hp right now. Don't need to tear it up.
Ryan
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Silverline 4" Turbo Back ss system w/Hushpower muffler. PPE Excelerator Hot + 2(set on 350), Bugshield, and grille insert. SCIV and 1058(Fleece Performance), HP 150 lift pump, Auto meter gauges and pod, EGR Blocker and FRPV shim kit, | |
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05-09-2007, 05:40 AM
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eBay Motors
#4 (permalink)
| | Duramax Forum Moderator
Join Date: Feb 2007 Location: Barnesville OH
Posts: 3,200
| Quote:
Originally Posted by aggar  I was just wondering. If I'd get a beefier tranny and take off the defuel, would that help with that? I'm only running it on 90 hp right now. Don't need to tear it up.
Ryan | mine does the same thing so i plan on doing a stage 4 or 5 tranny with out the defueler
__________________ James 
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. | |
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05-09-2007, 09:46 AM
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eBay Motors
#5 (permalink)
| | Super Moderator
Join Date: Aug 2005 Location: Alaska
Posts: 1,601
| Quote:
Originally Posted by aggar I was just wondering. If I'd get a beefier tranny and take off the defuel, would that help with that? I'm only running it on 90 hp right now. Don't need to tear it up.
Ryan |
That defuel is already built into the stock programming. I don't know that you can take out that defuel with tuning. You might be able to if you are using EFI live, but like I said, I am not real sure about this, but that is what I gather from reading the various forums. How many miles you have on your fuel filter? Could be a dirty MAF sensor too, but highly doubtful. I usually just roll onto the throttle when I pass someone...I still floor it, but not all at once. I don't seem to notice a defuel too much, and I am running about 90 hp between my 2 programmers.
__________________ 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust
TST Powermax Programmer, Diablosport Predator
285/75-16 BFG T/A KOs, Eagle Alloys Series 187
Clifford 2 way remote start, High Idle, Bilsteins
Extang Classic Platinum Tonneau Cover
AFE Magnum Force Stage 2 Proguard 7 intake Kennedy Diesel Merchant Automotive My Photos | |
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05-09-2007, 10:53 AM
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eBay Motors
#6 (permalink)
| | DuramaxForum Fanatic
Join Date: Mar 2007 Location: Kirklin, IN
Posts: 532
| I think the PPE excelerator will take off the additional defueling that it adds. If I remember correctly that is one of the tuning options. How much does a stage 4 or 5 tranny cost so I have an idea?
Ryan
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Silverline 4" Turbo Back ss system w/Hushpower muffler. PPE Excelerator Hot + 2(set on 350), Bugshield, and grille insert. SCIV and 1058(Fleece Performance), HP 150 lift pump, Auto meter gauges and pod, EGR Blocker and FRPV shim kit, | |
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05-09-2007, 02:24 PM
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eBay Motors
#7 (permalink)
| | Senior Member
Join Date: Mar 2007 Location: North Pole, Alaska
Posts: 100
| I believe they are in the 4 to 5K range check here for actual prices Suncoast Transmissions or for the kit Stage IV kit
__________________ 3rd owner of a 2001 Forest Green Metallic Chevy Silverado LS 2500HD CC LB Duramax LB7 low miles w/PPE Boost Valve, BD Power LH exhaust manifold, Merchant Auto high idle. Firestone Ride rite airbags, Bridgestone 245/75/R16's summer and siped Toyo Open Country 265/75/R16's in winter Plan on adding a pyro and boost guage set and eventually a tuner which I am trying to find the right one for my vehicle and price range. Looking for better fuel mileage  | |
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05-10-2007, 05:33 AM
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eBay Motors
#8 (permalink)
| | Member
Join Date: Apr 2007 Location: Harper, Tx
Posts: 84
|  Everybody with a automatic chevrolet has this problem!!!! I know guys with gassers that have it, i have a cousin that has a 98 Camaro ls1, and he has the problem, i think it's more of a transmission problem than defueling.
__________________
James-
06 2500 HD SC 4x4 Duramax/Allison
4" turbo back silverline
AFE Magnum intake
Edge Juice w/ attitude
ATS 5 star torque converter, C-3 Clutch pack, Converter lock- up controller
285 bfg all terrains
Ranchhand bumpers front and rear | |
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05-10-2007, 08:17 AM
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eBay Motors
#9 (permalink)
| | DuramaxForum Fanatic
Join Date: Mar 2007 Location: Kirklin, IN
Posts: 532
| I doubt its a tranny problem with the ally.
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Silverline 4" Turbo Back ss system w/Hushpower muffler. PPE Excelerator Hot + 2(set on 350), Bugshield, and grille insert. SCIV and 1058(Fleece Performance), HP 150 lift pump, Auto meter gauges and pod, EGR Blocker and FRPV shim kit, | |
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