4" or 5" exhaust - Dodge Diesel

needaram · 10-05-2005, 07:47 PM

Is there any reason to get the flo pro 5 inch exhaust instead of the 4 inch if the truck is used for daily driving and will just have an xzt box or something equivalent? thanks, brad

HorseHauler · 10-05-2005, 08:31 PM

stay with the 4, 5 is overated for just an XZT

DSLRammin · 10-06-2005, 02:24 AM

Stay with a 4", my 5" has a bad drone.
just my .02

Hounddog · 10-06-2005, 03:21 AM

5 inch is usually used on 500 h.p. plus

Mark Craig · 10-06-2005, 08:13 AM

needaram,

The guys are right, 4.0 will support up to 500 RWHP, it's cheaper, sounds better to most folks and is easier to install in some cases too. Make SURE that you get a system with a packed muffler, the ones that have the hollw core mufflers actually create back pressure ans are the best value for your money etc.

Since you have a 2004.5 + trucks you could just get our MBRP performance replacement muffler and an optional cat test pipe, if you race or go off road, and then you have a 4.0 turbo back system for a very cost effective price.

Call us if you have any questions etc.

Mark @ DPPI

zuma · 10-06-2005, 12:11 PM

I like my 5, and it sounds good too especially when it shifts into OD and lugs down a little.

DustyRock · 10-06-2005, 12:26 PM

There are many, many threads on 4" and 5" exhaust on this site. Try a search on it and you will see. Its been beat to death. Here is just one of them.

http://www.dieseltruckresource.com/d...ad.php?t=72879

Dusty

hump · 10-06-2005, 03:16 PM

5" Will have a terrible drone if it's straightpiped but it's way louder than 4" straightpiped. What size is currently on your truck? If you already have 4", why not ditch the stock muffler and get an aftermarket one for better flow? Much cheaper and the money you save can go towards another gift for your truck.

HUMP

DustyRock · 10-06-2005, 05:19 PM

I guess I am lucky. Mine does not drone. In fact the stock exhaust going up the Grapevine (interstate 5) at 70 mph made the cab drone (hum). With the 5" straight it does not do that. However it is loud (outside) when you get on it but it is not raspy. See the other thread..........

Car_nut57 · 10-06-2005, 05:57 PM

All you really need to do is a cat back 4" or a 4" Aeroturbine kit to replace the factory muffler.

needaram · 10-06-2005, 06:02 PM

thanks for the replies fellas, I think I'll just get a 4 inch aftercat system.

TheWolf · 10-09-2005, 06:16 PM

You already have a 4" correct..?(2005) Just get yourself a new muffler.

BamBam · 10-09-2005, 09:27 PM

I thought it was 3.5 to the muffler and 4 inches muffler back? I am pushing 400 HP now and looking to install the EZ...Attitude. That would put me over 500hp....I'm looking real hard at the 5" from the turbo all the way back...

HorseHauler · 10-09-2005, 09:29 PM

Nope, your 05 is a full 4" system

just with a couple restrictions

BamBam · 10-09-2005, 09:41 PM

Gota get rid of those restrictions...get the EGT's down...

10-05-2005, 08:31 PM	#2
HorseHauler Registered User Join Date: Aug 2004 Location: Batavia, Ohio Posts: 1,558 My Photo Gallery My Classified Ads	stay with the 4, 5 is overated for just an XZT __________________ Eric, FF/EMT-P 05 CTD, Laramie, 2500, 4x4, QC, LB, 48re,GPS, U-Connect, Red/Silver, TT Mirrors, Gooseneck, Rhino liner(HATE IT!), Mopar Step Bars, Chrome Tip, Navigator Back-Up Lights, Uniden 78 Elite Peaked & Tuned, Wilson 1000 Mag Mount. Tube and Ring MIA, MBRP Muffler, AFE Filter, Howards Timer, Air Horns, 285 Nitto's Traded 03 2500 SO Cummins- Great Truck I've Been Spark Plug Free Since 2003! Pulls 4-horse Sooner GN, 3-horse 4-Star GN, 25-ft Flatbed 14,000# GN VIVA ITALIA

10-06-2005, 02:24 AM	#3
DSLRammin Registered User Join Date: Jun 2004 Location: Alberta, Canada Posts: 221 My Photo Gallery My Classified Ads	Stay with a 4", my 5" has a bad drone. just my .02 __________________ 03 / 2500 / SWB / QC / Laramie / Bright White Sport / 4x4 / 6sd / 555 / 3:73s / Edge EZ / VA C3.2 / BD 5" Exhaust / Airaid intake / 295 Nitto's / Ultra starter/alarm / 4" Wheel to wheel putco bars / DSP5er / putco lighted box rails / Bushwaker "street flares" / A-pillar Di-pricol Pyro/Boost / boost elbow 38 psi / B-Quiet extreme sound deadening / What silencer ring?

10-06-2005, 03:21 AM	#4
Hounddog Registered User Join Date: Mar 2004 Location: Ila georgia Posts: 4,463 My Photo Gallery My Classified Ads	5 inch is usually used on 500 h.p. plus __________________ 2003 H.o.dually 4x4 6 speed Banks 4 inch exhaust and Afe Pro guard 7 Stage 1.MAP chrome steps,Lund chrome wind deflectors,smoke vent shades,B&W hide a ball,4.10 gears,Steller tool box,Westach combo boost&Egt gauge pillar mount,Amsoil fliuds . Rokktech crank sensor.2009 Dodge 1500 Quab cab Slt white,2wd.Hemi 3.92 rear gear,Magnaflow exhaust.2010 Mercury Gran Marquis. 2008 Vette convertible.

10-06-2005, 12:11 PM	#6
zuma Registered User Join Date: Aug 2005 Posts: 3 My Photo Gallery My Classified Ads	I like my 5, and it sounds good too especially when it shifts into OD and lugs down a little. __________________ 2001 Dodge Ram 2500 4x4 Auto. 5" Exhaust Pipe. K&N Air intake, Superchips Programmer, Auto Meter Ultra-Lite Gauges (tran temp, boost, pyro, FP)

10-06-2005, 12:26 PM	#7
DustyRock Registered User Join Date: Sep 2004 Location: Left Coast, (Right Wing) Posts: 423 My Photo Gallery My Classified Ads	There are many, many threads on 4" and 5" exhaust on this site. Try a search on it and you will see. Its been beat to death. Here is just one of them. http://www.dieseltruckresource.com/d...ad.php?t=72879 Dusty __________________ 97 3500 4X4 Xcab SLT Laramie White, It can smoke, and it can be real loud. Almost forgot: Genos Cup Smoothie..!!! NRA Lifer DTR Contributor

10-06-2005, 08:13 AM	#5
Mark Craig Banned Join Date: May 2003 Location: Nashvile Tennessee Posts: 1,268 My Photo Gallery My Classified Ads	needaram, The guys are right, 4.0 will support up to 500 RWHP, it's cheaper, sounds better to most folks and is easier to install in some cases too. Make SURE that you get a system with a packed muffler, the ones that have the hollw core mufflers actually create back pressure ans are the best value for your money etc. Since you have a 2004.5 + trucks you could just get our MBRP performance replacement muffler and an optional cat test pipe, if you race or go off road, and then you have a 4.0 turbo back system for a very cost effective price. Call us if you have any questions etc. Mark @ DPPI

10-06-2005, 03:16 PM	#8
hump Chapter President Join Date: Jun 2005 Location: Charles Town, West Virginia Posts: 439 My Photo Gallery My Classified Ads	needaram 5" Will have a terrible drone if it's straightpiped but it's way louder than 4" straightpiped. What size is currently on your truck? If you already have 4", why not ditch the stock muffler and get an aftermarket one for better flow? Much cheaper and the money you save can go towards another gift for your truck. HUMP __________________ 2007 Mega Cab Dually, 3:73 rears, TRE Built Tranny, Smarty, Boost Fooler, Custom Cold Air Intake, Pusher Intake Manifold, Autometer Phantom II Gauges, LT275/70/17 Coopers with 1/2" Spacer, 5" Exhaust

10-06-2005, 05:19 PM	#9
DustyRock Registered User Join Date: Sep 2004 Location: Left Coast, (Right Wing) Posts: 423 My Photo Gallery My Classified Ads	I guess I am lucky. Mine does not drone. In fact the stock exhaust going up the Grapevine (interstate 5) at 70 mph made the cab drone (hum). With the 5" straight it does not do that. However it is loud (outside) when you get on it but it is not raspy. See the other thread..........

10-06-2005, 05:57 PM	#10
Car_nut57 Registered User Join Date: Jan 2004 Posts: 446 My Photo Gallery My Classified Ads	All you really need to do is a cat back 4" or a 4" Aeroturbine kit to replace the factory muffler.

10-06-2005, 06:02 PM	#11
needaram Registered User Join Date: Aug 2005 Location: Olive Branch, MS Posts: 35 My Photo Gallery My Classified Ads	thanks for the replies fellas, I think I'll just get a 4 inch aftercat system.

10-09-2005, 06:16 PM	#12
TheWolf Banned Join Date: Jun 2004 Location: Western PA Posts: 37 My Photo Gallery My Classified Ads	You already have a 4" correct..?(2005) Just get yourself a new muffler.

10-09-2005, 09:27 PM	#13
BamBam Registered User Join Date: Feb 2003 Location: Italy, Texas Posts: 146 My Photo Gallery My Classified Ads	I thought it was 3.5 to the muffler and 4 inches muffler back? I am pushing 400 HP now and looking to install the EZ...Attitude. That would put me over 500hp....I'm looking real hard at the 5" from the turbo all the way back... __________________ 2005, 2500, 4X4, SWB, SRW, HO, 48RE Cab Lights (the wife hates), 3.73, MTR 37" , Fog lights, Spot lights, RINO Liner, Kore Suspension, 100 HP DR. Performance Injectors, TrueFlow system, Rokktec 2deg CPS, no muffler still got the kitty.

10-09-2005, 09:29 PM	#14
HorseHauler Registered User Join Date: Aug 2004 Location: Batavia, Ohio Posts: 1,558 My Photo Gallery My Classified Ads	Nope, your 05 is a full 4" system just with a couple restrictions

10-09-2005, 09:41 PM	#15
BamBam Registered User Join Date: Feb 2003 Location: Italy, Texas Posts: 146 My Photo Gallery My Classified Ads	Gota get rid of those restrictions...get the EGT's down...

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