Technically no. The biggest reason people choose a 5" system over a 4" is for sound. While both kits will lower egts and gain fuel mileage, the 5" system will cause you to loose a little bottom end torque. However, one of the trucks that will benefit from a 5" kit is the new 04.5+ Dodges. Because these trucks not only already come with a 4" system but also produce so much torque at the lower end they will usually see the best results from a 5" kit.
__________________
05 LLY 4" mbrp front pipe to 5" Grand Rock stacks, no muffler no kitty no codes, Quadzilla stealth, Edge J/A, PPE boost controller, Airaid intake, air ride suspension, DJM upper and lower control arms Kyle (1lowdiesel) 1-888-343-7354 Ask About Our Monthly Specials NEW!! 30 Day Price Protection Guarantee! Banks, Edge, PPE, Hypertech, ATS, BD Diesel, Silverline, MBRP, Magnaflow, Mag-Hytec, Air Dog fuel systems, Titan and Transferflow fuel tanks, and many many more.
Kyle you forgot the WOW factor associated with the 5", jk. I didnt notice loss on mine but when you go from not hearing the truck ti it screaming it feels different well atleast to me.
__________________ 07.5 Chevy Summit White Reg cab LMM, 5" MBRP straight pipe, 6" tip DPF Deleted, Cobalt boost & pyrometer, line of fire and ice. 5% tint. Banks Ram air intake.
Meyer Performance & Fabrication, LLC Home of your diesel performance needs. www.meyerperformance.com (812)-344-4421 Tyler Fass Sale for November pm for details.
The biggest reason i initially got the MBRP was everyone said they droned the least going down the road. Compared to a magnaflow on a friends 06 there is no drone.
__________________ 05' LLY CC/SB, PPE Standard, MBRP SS 4", BD Power Manifold, Autometer Phantom 2 Pyro and Boost, Kennedy fingered n plugged, cat grew legs, Belltech 1/3 drop, Michelin LTX M/S 265/75/16, 22 HWY/18 CITY.
KILLERBEE Designed Intake piece- Everyone needs one of these!
Rock it till it sounds expensive!
Dont argue with a moron in public....Others may be confused on whos who.
is there any reason why non of you ran a 4" flowmaster? i loved mine, the only reason i took it off is cuz i wanted stacks.
__________________ 2004 LB7 Dark Charcoal 2500HD, Ext Cab, Short Bed, 6" Tough Country lift with 35" MTZ's, Buckstop Bumpers, Hyptertech PPlll, AEM Brute Force Intake,4" MBRP Turbo-Back w/ 5" Black Stainless Tip, BLACKED OUT
No i wanted a exhaust that was man focus was diesel, and that you see on alot of deisel's.
__________________ 07.5 Chevy Summit White Reg cab LMM, 5" MBRP straight pipe, 6" tip DPF Deleted, Cobalt boost & pyrometer, line of fire and ice. 5% tint. Banks Ram air intake.
Meyer Performance & Fabrication, LLC Home of your diesel performance needs. www.meyerperformance.com (812)-344-4421 Tyler Fass Sale for November pm for details.
oh ok, well im leaning towards mbrp, prolly a 4" maybe 5" hows the sound pretty low and aggressive? also is it loud at idle?
__________________ 2004 LB7 Dark Charcoal 2500HD, Ext Cab, Short Bed, 6" Tough Country lift with 35" MTZ's, Buckstop Bumpers, Hyptertech PPlll, AEM Brute Force Intake,4" MBRP Turbo-Back w/ 5" Black Stainless Tip, BLACKED OUT
I run a straight pipe so is kinda loud (how i like it) but at idle not bad, and cruisin not bad with a muffler. And has the deep exhaust sound which i like.
__________________ 07.5 Chevy Summit White Reg cab LMM, 5" MBRP straight pipe, 6" tip DPF Deleted, Cobalt boost & pyrometer, line of fire and ice. 5% tint. Banks Ram air intake.
Meyer Performance & Fabrication, LLC Home of your diesel performance needs. www.meyerperformance.com (812)-344-4421 Tyler Fass Sale for November pm for details.
__________________ 2004 LB7 Dark Charcoal 2500HD, Ext Cab, Short Bed, 6" Tough Country lift with 35" MTZ's, Buckstop Bumpers, Hyptertech PPlll, AEM Brute Force Intake,4" MBRP Turbo-Back w/ 5" Black Stainless Tip, BLACKED OUT
I ran flowmaster in my jeep, that i beat the snot out of, and the flowmaster rusted out in1.5 yrs. This left a bad taste in my mouth with flowmaster. Another reason i recommend stainless.
__________________ 05' LLY CC/SB, PPE Standard, MBRP SS 4", BD Power Manifold, Autometer Phantom 2 Pyro and Boost, Kennedy fingered n plugged, cat grew legs, Belltech 1/3 drop, Michelin LTX M/S 265/75/16, 22 HWY/18 CITY.
KILLERBEE Designed Intake piece- Everyone needs one of these!
Rock it till it sounds expensive!
Dont argue with a moron in public....Others may be confused on whos who.
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.