Well I bought this Magnaflow exhaust and I had read somewhere the muffler was like 3 inch down the middle. Crap more like 2 1/2 at best. That thing is NOT a muffler its an orfice, a major restriction. I feel bad for people who dont have the skills or facilities to fix stuff like that. I guess you could buy a different muffler or put a straight pipe in there. I had a 4 inch Flowmaster Outlaw muffler I put inplace of the restricter, welded all joints but the joint right in front of the muffler, should be good now. I will get it off the lift and put some new coolant in and find out how it sounds.
__________________ The older I get the less I know.
2005 CCSB with a 6in RCD lift, 325 65 18s, 4.56 gears, 4in Magnaflow straight pipe and a BD CAI, Latest and greatest PPE oil centrifuge. Now I need a pass side up pipe for an LB7 and my EGR removal will be complete.
They make a Muffler Delete pipe. I've got one waiting to get put on mine.
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Magnaflow 5" SS turbo back, Diamond Eye Downpipe, SCIV and 1058, SC Case Brace, 68mm Cheetah, EFI Live, Air Dog 150 II, Auto meter gauges and pod, EGR Blocker and FRPV shim kit, ATS dual CP3 kit, 60% Extrude hone injectors E-locker
2001 Ext Cab LB 2500hd Lb7. 5" exhaust, EFI Live w/dsp5, and special papa running boards.
They make a Muffler Delete pipe. I've got one waiting to get put on mine.
I told them thats what I wanted, they musta thought...no wait no they did'nt! I got it covered though, I'll run it with the Outlaw muffler till I get enough ambition to get a chunk of 4 in stainless tubing and eliminate it. I can put my whole fist inside that muffler so its about straight as it gets without actually being straight thru.
__________________ The older I get the less I know.
2005 CCSB with a 6in RCD lift, 325 65 18s, 4.56 gears, 4in Magnaflow straight pipe and a BD CAI, Latest and greatest PPE oil centrifuge. Now I need a pass side up pipe for an LB7 and my EGR removal will be complete.
Well I bought this Magnaflow exhaust and I had read somewhere the muffler was like 3 inch down the middle. Crap more like 2 1/2 at best. That thing is NOT a muffler its an orfice, a major restriction. I feel bad for people who dont have the skills or facilities to fix stuff like that. I guess you could buy a different muffler or put a straight pipe in there. I had a 4 inch Flowmaster Outlaw muffler I put inplace of the restricter, welded all joints but the joint right in front of the muffler, should be good now. I will get it off the lift and put some new coolant in and find out how it sounds.
what are you talking about? Magnaflow has a 4" straight through muffler, IIRC.
__________________ Michael, 2500HD LLY, Systems Engineer, EMAIL
Define "straight thru" This is the culprit...er muffler.
This is a cup with a O.D. of 3.20 or so...
I dropped the cup into the muffler and it stopped when the top lip of the cup got close to the inside diameter of the muffler.
This picture is the best I can get into the opening which is at best 3 inch dia "straight thru" the system might as well be a 3 inch.
Hope the pictures clear up my definition of "restriction"
__________________ The older I get the less I know.
2005 CCSB with a 6in RCD lift, 325 65 18s, 4.56 gears, 4in Magnaflow straight pipe and a BD CAI, Latest and greatest PPE oil centrifuge. Now I need a pass side up pipe for an LB7 and my EGR removal will be complete.
yep my 5" was the same way. A nice piece of flex pipe fixed that!
__________________ Four stroke diesel S.S.B.B. Suck Squeez Bang Blow
06 LBZ with 5 inch magnaflow exhaust,Bd exhaust manifold, Bully dog outlook, Egr blocker, Firestone air bag system,Custom sound system, dual fuel filters,leveling kit, B&M deep tranny pan,TTS lift pump,Turbo Resonator plugged,Cooper ST 265/75R16, Bully nerf bars and B&W guardian headache rack sprayed with reflex bed liner, B&W turn over ball,B&W Tow&Stow, transgo jr, efi live, tranny filled with transynd, Tierods sleeved,Diamond eye turbo direct pipe,US Speedo gauge face,SC IV TC 1056,Suncoast tansfercase brace,8000k hid on the highs and lows, pump rub fixed,name is Dusty
My iron is yellow Id rather be dead then CUMMINS RED!
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Linear Mode
