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dual exhaust
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Hi fergie,
If you've got the stock 3" system, then it would help as the backpressure would be less. I'd qualify that assuming that you got a good Y pipe & they mandrel bend the 3". Flowmaster & others make efficient Y pipes in 3".
If you've got a 4" system, then I'd guess it would be only slightly better, & maybe not worth the $. Definately not better if they don't mandrel bend the 3" pipe or they make the Y pipe. You stand to loose too much in the regular bends as they scrunch it under 3". 3" pipe is 7. 065 in2. 2 of them would be 14. 13 in2. 4" pipe is 12. 56 in2, so you'd only be gaining a little exhaust pipe area.
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Money Sink - 96, 5 speed, SLT, 4X4, LWB, Ext Cab, ISSPRO pillar, TST 280/685 all the way forward, AFC housing all the way forward, Delvac 1 & Amsiol, Injectors, K&N, Monicas silencer ring removed, Exhaust brake, 4" CAT back & CATless, 4" chrome turn down straight out back, Mag-Hytec, 3:54, 235s.
If you've got the stock 3" system, then it would help as the backpressure would be less. I'd qualify that assuming that you got a good Y pipe & they mandrel bend the 3". Flowmaster & others make efficient Y pipes in 3".
If you've got a 4" system, then I'd guess it would be only slightly better, & maybe not worth the $. Definately not better if they don't mandrel bend the 3" pipe or they make the Y pipe. You stand to loose too much in the regular bends as they scrunch it under 3". 3" pipe is 7. 065 in2. 2 of them would be 14. 13 in2. 4" pipe is 12. 56 in2, so you'd only be gaining a little exhaust pipe area.
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Money Sink - 96, 5 speed, SLT, 4X4, LWB, Ext Cab, ISSPRO pillar, TST 280/685 all the way forward, AFC housing all the way forward, Delvac 1 & Amsiol, Injectors, K&N, Monicas silencer ring removed, Exhaust brake, 4" CAT back & CATless, 4" chrome turn down straight out back, Mag-Hytec, 3:54, 235s.
I have a single three inch halfway back where it splits off to two three inch pipes out each corner. I haven't lost any power, but I can say I gained some by removing all restrictions (i. e. muffler and resonator) and opening it up a little. I had a friend who works at a muffler shop make a Y pipe out of a glass pack. He cut one end of, removed the fiberglass packing, smashed the end a little, and welded two 3' pipes to it. It looks like I have a muffler, but I don't. My suggestion is to find another muffler shop.
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98. 5 3500 QC 4x4
Driftwood/ Grey Int.
5 spd, 3. 54
PowerMax2, 19. 5" Alcoas, 245/70-19. 5 Michelins,
Ranchhand bumbers and toolbox, dual 3" with 5" tips, "Scotty Air System", Centerforce Dual Friction clutch, Autometer Gauges, Cobra CB, Sony CD player, Polk Audio Speakers, Upgraded fuel lines from tank to injector pump, Mag-Hytec Diff Cover, PacBrake.
69 Z-28 Camaro, Silver/Black, original motor, 58,000 miles
Building: 32 (Censored) 5 Window, "American Graffiti" replica
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98. 5 3500 QC 4x4
Driftwood/ Grey Int.
5 spd, 3. 54
PowerMax2, 19. 5" Alcoas, 245/70-19. 5 Michelins,
Ranchhand bumbers and toolbox, dual 3" with 5" tips, "Scotty Air System", Centerforce Dual Friction clutch, Autometer Gauges, Cobra CB, Sony CD player, Polk Audio Speakers, Upgraded fuel lines from tank to injector pump, Mag-Hytec Diff Cover, PacBrake.
69 Z-28 Camaro, Silver/Black, original motor, 58,000 miles
Building: 32 (Censored) 5 Window, "American Graffiti" replica
Jeff,
We followed you(tried to) from the BBQ at Carson Dodge back to CVI at MM. Your duals look COOL from the back.
Bill
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Y2K 3500QC, 6 Speed, 4. 10, SLT+, Camper & Tow Pkg. , Westin Chrome Nerf Bars, Mopar Flaps, Reese 20K Hitch, V-A CPC, EGT & Boost Gauges, RPM 45 Gallon Aux. Fuel Tank, Highway Products 5th Wheel Toolbox, ECM Controlled PacBrake, Painless Wiring Kit, Mag-Hytec Diff. Cover, 80% Towing Hitchhiker II 31', 2 slideouts, 19,750 GCW
We followed you(tried to) from the BBQ at Carson Dodge back to CVI at MM. Your duals look COOL from the back.
Bill
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Y2K 3500QC, 6 Speed, 4. 10, SLT+, Camper & Tow Pkg. , Westin Chrome Nerf Bars, Mopar Flaps, Reese 20K Hitch, V-A CPC, EGT & Boost Gauges, RPM 45 Gallon Aux. Fuel Tank, Highway Products 5th Wheel Toolbox, ECM Controlled PacBrake, Painless Wiring Kit, Mag-Hytec Diff. Cover, 80% Towing Hitchhiker II 31', 2 slideouts, 19,750 GCW
#adWhoa, hold on pardner! Don't give up on the dual exhaust idea so quick. I got my cat gutted, then they "y'ed" out of it. Had 'em run dual straights. Do you gain any hp? Naaaa, but with my new smokin' set up, it's nice to be able to look in either mirror, and see that semi look, with twin pillars of smoke cummin' out the back quarter pannels
#adSo far haven't been able to push egt's past about 650-700 post turbo, don't know if the exhaust is part of it or not, but it sure don't hurt. Did I mention how dual straights sound when you're smokin' past a chivy gasser?
#ad------------------
95 2500 SLT Laramie 3. 54, automatic,Herculiner bed liner, JVC cd out of factory infinity system, southwest grill gaurd (a favorite amongst the deer population), K&N, AFC adjusted, dual straight exhaust out of "gutless" cat, Geno's dual EGT/boost gauge, TST #6 plate slid all the way forward, AFC housing slid all the way forward
Jeff,
My wife and I were riding with fellow TDR member Dick Keyes and his wife in their 95 QC 2500 5 speed-same color as your truck. We were having a hard time keeping up.
You do need a Mag-Hytec rear axle cover!!
Bill
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Y2K 3500QC, 6 Speed, 4. 10, SLT+, Camper & Tow Pkg. , Westin Chrome Nerf Bars, Mopar Flaps, Reese 20K Hitch, V-A CPC, EGT & Boost Gauges, RPM 45 Gallon Aux. Fuel Tank, Highway Products 5th Wheel Toolbox, ECM Controlled PacBrake, Painless Wiring Kit, Mag-Hytec Diff. Cover, 80% Towing Hitchhiker II 31', 2 slideouts, 19,750 GCW
My wife and I were riding with fellow TDR member Dick Keyes and his wife in their 95 QC 2500 5 speed-same color as your truck. We were having a hard time keeping up.
You do need a Mag-Hytec rear axle cover!!
Bill
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Y2K 3500QC, 6 Speed, 4. 10, SLT+, Camper & Tow Pkg. , Westin Chrome Nerf Bars, Mopar Flaps, Reese 20K Hitch, V-A CPC, EGT & Boost Gauges, RPM 45 Gallon Aux. Fuel Tank, Highway Products 5th Wheel Toolbox, ECM Controlled PacBrake, Painless Wiring Kit, Mag-Hytec Diff. Cover, 80% Towing Hitchhiker II 31', 2 slideouts, 19,750 GCW
I had duals on my '98. 5. It looked and sounded awesome. Originally, I had just a regular 4" system with a muffler and 5" chrome tip. Then I went to duals with 4" x 20" chrome tips. Then I took the muffler off. Man did that thing ever dound good. #ad
Looked way cool from the back, too... Check it out at My 98. 5 With Duals
BOMBED
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Evan A. Beck "NW PUNK"
Prez, NW BOMBers
'01 2500HD 4x2 QC, 139" WB, 6-speed, ETH, SLT... yadda yadda yadda... K&N, 3" "PIPE BOMB", 6-way turn signal conversion, aux. backup lights, Line-X, Cummins badging. 3,406 miles and counting!
Check out NW PUNK for more info!
#adLooked way cool from the back, too... Check it out at My 98. 5 With Duals
BOMBED
------------------
Evan A. Beck "NW PUNK"
Prez, NW BOMBers
'01 2500HD 4x2 QC, 139" WB, 6-speed, ETH, SLT... yadda yadda yadda... K&N, 3" "PIPE BOMB", 6-way turn signal conversion, aux. backup lights, Line-X, Cummins badging. 3,406 miles and counting!
Check out NW PUNK for more info!
Just do a 5inch system, sounds great and hardly any back pressure
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99, 4x4, slt, 3500,5spd,
3. 54 gears, black,hoswel bale bed, blue box, Pac-
Brake, 5in. sraightpipe, K&N, silencer ring removed, 5 star aluminum wheels,brushguard, blackouts, eclipse stereo, matrix headlight bulbs, blue neon fog lights, KC Daylighter, Dodge splash guards, Lund Cold Fronts
-- email address removed --
Phil's Page.com
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99, 4x4, slt, 3500,5spd,
3. 54 gears, black,hoswel bale bed, blue box, Pac-
Brake, 5in. sraightpipe, K&N, silencer ring removed, 5 star aluminum wheels,brushguard, blackouts, eclipse stereo, matrix headlight bulbs, blue neon fog lights, KC Daylighter, Dodge splash guards, Lund Cold Fronts
-- email address removed --
Phil's Page.com
Last edited by a moderator:
Evan's '98 looked very nice cruising the highway with the dual 4" chrome tips out back. When pulling his truck into the dyno bay at BD last April, some of the Ford guys were admiring his duals. The exhaust tip on the driver's side is what caught the attention of the Cummins types #ad
.
The duals sounded very nice, not as loud as a straightpiped stock system, but in stereo#ad
. What surprised me when I drove his truck was how quiet his pipe-bombed system was inside the cab. I rapped it out a couple times and it wasn't much louder than stock (maybe I helped out in killing the injection pump
#ad
). I'm guessing it had to do with the angle of his exhaust tips. Straight-pipe stock system is VERY loud in comparison (but sounds great!).
I plan to put a single 5" system on my new truck, then eventually split it into dual 4" just in front of the rear axle and exit at the rear. I think I'll have to go with a smaller spare to find some room for the left pipe.
Vaughn
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2001 Ram 2500 QC SWB 2wd, Patriot Blue/Driftwood, HO Cummins & 6-speed, 3. 54LSD, Cab & Fog lamps, Camper & Tow Pkg.
BOMBings: K&N RE0880, straight piped, debadged body.
Performance: 245rwHP on BD Dyno. 18/23 mpg city/hiway
7433 miles (6/08/00)
[This message has been edited by Vaughn MacKenzie (edited 06-09-2000). ]
#ad.
The duals sounded very nice, not as loud as a straightpiped stock system, but in stereo
#ad. What surprised me when I drove his truck was how quiet his pipe-bombed system was inside the cab. I rapped it out a couple times and it wasn't much louder than stock (maybe I helped out in killing the injection pump
#ad). I'm guessing it had to do with the angle of his exhaust tips. Straight-pipe stock system is VERY loud in comparison (but sounds great!).
I plan to put a single 5" system on my new truck, then eventually split it into dual 4" just in front of the rear axle and exit at the rear. I think I'll have to go with a smaller spare to find some room for the left pipe.
Vaughn
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2001 Ram 2500 QC SWB 2wd, Patriot Blue/Driftwood, HO Cummins & 6-speed, 3. 54LSD, Cab & Fog lamps, Camper & Tow Pkg.
BOMBings: K&N RE0880, straight piped, debadged body.
Performance: 245rwHP on BD Dyno. 18/23 mpg city/hiway
7433 miles (6/08/00)
[This message has been edited by Vaughn MacKenzie (edited 06-09-2000). ]
Phil. . i agree #ad
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99 Quad,Long bed,4x4, SLT,Auto,K&N,Mobil Super Delvac 1300,fuel line up-grade from lift pump to filter and from filter to injection pump, Suncoast coverter,BD valve body and pressure-loc,Mag-Hytec trans pan,Amsoil ATF-4,Auto meter Ultra lite gauges:Boost,EGT,Fuel Pressure,Trans Temp, "true" Jet-Hot Coated 5 inch exhaust from turbo to tail pipe(over the axle),waiting in the wings, DD stage 3 injectors and boost module,HX-40 16cm in transit..... finally a blue box or TST box or?????
#ad------------------
99 Quad,Long bed,4x4, SLT,Auto,K&N,Mobil Super Delvac 1300,fuel line up-grade from lift pump to filter and from filter to injection pump, Suncoast coverter,BD valve body and pressure-loc,Mag-Hytec trans pan,Amsoil ATF-4,Auto meter Ultra lite gauges:Boost,EGT,Fuel Pressure,Trans Temp, "true" Jet-Hot Coated 5 inch exhaust from turbo to tail pipe(over the axle),waiting in the wings, DD stage 3 injectors and boost module,HX-40 16cm in transit..... finally a blue box or TST box or?????
Vaughn, my dual exhaust is WAY louder than the stock straight pipe. You can hear my truck from a mile away. I'm not kidding. I let people drive my truck so I can stand back and listen to it. My friend has a 97 with a straight pipe, and even he says mine is louder. I run 3" with 5" tips. It acts like megaphones to amplify the sound.
My plan is to use 4" from the turbo back to where it splits and keep the dual 3". I'm tired of spending money on the exhaust. I still have a complete setup for 4" chrome stacks laying in my garage. Didn't like the sound.
My plan is to use 4" from the turbo back to where it splits and keep the dual 3". I'm tired of spending money on the exhaust. I still have a complete setup for 4" chrome stacks laying in my garage. Didn't like the sound.
jeff , i know what you mean about the mega phone , i have a 4" with a short 5" chrome tip , running a dynomax race magnum, man is it loud , trying to find a shop that works with 4" near me is next to impossible , i want to put on duals i can get a made up "Y" at a big rig truck shop , then i just need to work on the rest , but i'm actually thinking of making up my own Y and using 3 inch over to 4" tips , but that may be defeating some of the increase i got with the 4" . at the dragstrip i saw a 15hp increase from the stock system to the 4"
Jeff,
Dual exhaust is the best. Especially if it is straight piped. Sounds like you'll have the same setup I had, with 4" that splits into dual 3" with big tips. From in the cab with the windows up, it was not too loud. But when the windows were down, it was LOUD. But hey, the louder the better. Mufflers suck! I cut my muffler off my ETH with only 150 miles on the truck. I already got a plan for future exhaust on my 2001... 4" off the HX40, then split it into dual 3" under the cab, then have BOTH come out infront of the right side wheel. Dual 4" stainless steel tips side by side. That'll look pretty menacing!#ad
No muffler, of course. Nothing but 10 feet of pipe!#ad
BOMBED
------------------
Evan A. Beck "NW PUNK"
Prez, NW BOMBers
'01 2500HD 4x2 QC, 139" WB, 6-speed, ETH, SLT... yadda yadda yadda... K&N, 3" "PIPE BOMB", 6-way turn signal conversion, aux. backup lights, Line-X, Mopar rubber mats, Cummins badging. 3,495 miles and counting!
Check out NW PUNK for more info!
Dual exhaust is the best. Especially if it is straight piped. Sounds like you'll have the same setup I had, with 4" that splits into dual 3" with big tips. From in the cab with the windows up, it was not too loud. But when the windows were down, it was LOUD. But hey, the louder the better. Mufflers suck! I cut my muffler off my ETH with only 150 miles on the truck. I already got a plan for future exhaust on my 2001... 4" off the HX40, then split it into dual 3" under the cab, then have BOTH come out infront of the right side wheel. Dual 4" stainless steel tips side by side. That'll look pretty menacing!
#adNo muffler, of course. Nothing but 10 feet of pipe!
#adBOMBED
------------------
Evan A. Beck "NW PUNK"
Prez, NW BOMBers
'01 2500HD 4x2 QC, 139" WB, 6-speed, ETH, SLT... yadda yadda yadda... K&N, 3" "PIPE BOMB", 6-way turn signal conversion, aux. backup lights, Line-X, Mopar rubber mats, Cummins badging. 3,495 miles and counting!
Check out NW PUNK for more info!
I have the 5 inch on my truck and I'm looking for a 7 inch tip. Anyone know where there is one at?
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99, 4x4, slt, 3500,5spd,
3. 54 gears, black,hoswel bale bed, blue box, Pac-
Brake, 5in. sraightpipe, K&N, silencer ring removed, 5 star aluminum wheels,brushguard, blackouts, eclipse stereo, matrix headlight bulbs, blue neon fog lights, KC Daylighter, Dodge splash guards, Lund Cold Fronts
-- email address removed --
Phil's Page.com
------------------
99, 4x4, slt, 3500,5spd,
3. 54 gears, black,hoswel bale bed, blue box, Pac-
Brake, 5in. sraightpipe, K&N, silencer ring removed, 5 star aluminum wheels,brushguard, blackouts, eclipse stereo, matrix headlight bulbs, blue neon fog lights, KC Daylighter, Dodge splash guards, Lund Cold Fronts
-- email address removed --
Phil's Page.com
Last edited by a moderator:
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Issue 128 – Digital Version
Digital Magazines
FREE!
TDR Test Drive - Digital Edition
Renew
Subscribe
Gift Subscriptions
Back Issues
Subscription Status
Address Change Form
Buyer's Guides
Ram Diagnostic Trouble Codes
The Perfect Collection
The Perfect Collection Vol. II
TSB Updates
Dodge/Cummins Historical Overview
Cameron Collection
What Makes Us Tick?
Product Showcase
Advertising
