01-04.5 LB7 Duramax PowertrainDiscussion 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
View Poll Results: Straight pipe or not
Straight pipe it!
56
81.16%
Leave the muffler on.
7
10.14%
Add a second muffler so it sounds quiet like a gasser.
Pretty straight forward, excuse the pun, I am thinking of straight piping my LB7, what do you guys think?
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, two JL audio 12" subs, Four Rockford Fosgate three way speakers
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock, Chad Reed's actual front fender.
Wish List: Suncoast iv, AD Lift pump, Timespentsearching's compressor upgrade.
i have my 03 lb7 straight piped with the stainless 4" system from mbrp love the sound from it
__________________ 2003 GMC Sierra LB7 Duramax 2500HD
6" Pro Comp lift 35" Mickeys Baja Mtz/16" DC-1 Black wheels
4" MBRP Stainless Straight Pipe to 5" Tip
K&N Intake System
Edge Juice With Attiude Monitor
Chrome/Clear Cab Lights
Z-liner Bed Spray
Train Horns Underneath Bed of Truck
__________________ - Kevin 2003 Sierra 2500HD LB7
SuperChips Flashpaq
Straight-piped and resonator plugged When I sit in my truck, does that make it MODded??
Got questions? Help us all out by filling out your signature with your ride's year, make model, and any modifications you've made.
I am in the same boat... But I think that Utah laws say that I can't have a straight pipe.... Something that it won't pass safety when next year comes. But I'm sure that is the way to go.
__________________ 2002 LB7 2500HD LT 4X4
Crew Cab White Black Leather
10% Window Tinting All Around
Leveling Kit
K&N Air Intake Stage 2
Bully Dog Chip
PPE Boost Valve
-More To Come! "America is all about speed. Hot, nasty, badass speed." -Eleanor Roosevelt, 1936
i love my straight pipe and it remarkably keeps my egts cooler when im gettin on it!!!
__________________ Randall - 96 12 valve CUMMINS 4x4, DDP 150's, HTT 64/71/13 turbo, AFE cold air intake ATS exhaust manifold, Dragon Fly pump 4kgs, Full cut delivery valves, over sized valves, +60 Springs, custom fuel plate, star wheel cranked, plate and AFC housing all the way fwd, suncoast tranny, lock in override switch, triple lock converter, 4 inch exhaust into a black 6'' miter, 52 psi boost.... Oh and NO smoke switch.
Justin - 05 D-MAX 4x4 efi live tuned by MMLMM, PPE fuel valve, 4in. straight pipe Glow Shift gauges.. Want more!!!!!
Straight pipe and I dunno if utah is like texas but I can get an inspection sticker for a bucket for a $100. I had a bagged truck for a few years with straight pipes, everything shaved including windshield wipers and never had a problem getting it inspected.
__________________ 2006 2500HD, 4WD, LT, 6.6 Turbo, LBZ, Allison 6 spd, XC/SB, Silver Birch Metallic,
Bone stock with the exception of being 5" Straight piped.
My other Chevy is an 05 Impala, 3.4 V-6, 4spd auto, 36mpg hiway @ 65mph
Thanks guys, did it, sounds great, i will post a before and after video soon.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, two JL audio 12" subs, Four Rockford Fosgate three way speakers
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock, Chad Reed's actual front fender.
Wish List: Suncoast iv, AD Lift pump, Timespentsearching's compressor upgrade.
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