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Forced Induction SystemsDetailed discussions regarding cold-air intake systens, superchargers, turbo chargers, and other induction systems for your vehicle.
This is a discussion thread titled "exhaust", within the Forced Induction Systems forum, part of the Technical & Vehicle Assistance Forums category.
well ive searched and found that duals supposedly kill your low end because the diameter of the piping is too large? however if i were to just use a Flowmaster either 40 or 50 muffler with single IN Dual Out and keep a 2.5 inch diameter piping would i keep the low end power i have?? I wouldnt not replace anything but the muffler and add two pipes coming out and not one! i wouldnt have the pipe leading to the muffler removed and replaced if that matters? I really want the duals but i dont want to sacrifice low end power for it? thanks
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 89/93 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
Go with MagnaFlow or Borla.
That seems to be the consensus of most of the people here.
I had a MagnaFlow (single in/dual out) installed last weekend, installed the True Flow kit this weekend, and have found no loss of low end power. The combination actually improved performance considerably.
Well worth it IMO.
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 89/93 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
well ive searched and found that duals supposedly kill your low end because the diameter of the piping is too large? however if i were to just use a Flowmaster either 40 or 50 muffler with single IN Dual Out and keep a 2.5 inch diameter piping would i keep the low end power i have?? I wouldnt not replace anything but the muffler and add two pipes coming out and not one! i wouldnt have the pipe leading to the muffler removed and replaced if that matters? I really want the duals but i dont want to sacrifice low end power for it? thanks
why couldn't use stock piping into a single muffler w/ smaller i.d.(inside diameter) duals coming out, whatever i.d. when combined equals 2.25"? would that keep the same backpresure as stock?
It would look kind of funny but you could always weld a couple of tips on to make them look larger.
__________________ My 03 Tundra v6 AC SR5 mods:URD lightened crankshaft pulley(soon) | Xtreme Alloy 1079 | 285/75-16 BFG's | Spintech ProStreet dumped | Total Chaos str/rck bushings |Camburg UCAs| TRD 4X4 v8 coil | Daystar 2.5" spacers | TRD yellow-blue shocks | 5100's |No-Slip Locker w/Mobile1 synthetic dif. oil | B&M transmission cooler | 911 performance brake pads | Hellwig swaybar(need quick disconnects) | Front seat covers | 35% Tint 2 front windows | Drop-in bed liner | clear-red-clear tail lights | Clear corners | AMI 21" polished antenna | Challenger steps | Toyota skid plate | Demello bed bar w/ cheapo fogs re-wired and running 100w H3's | Color matched mirror covers| Debadged | PermaShield teflon
Go with the Flowmaster if you'd like. I have a 50 delta series and I love it. You might loose a little low end but not to much if you do single in duel out. I have duel in and out and lost to much low end; but I don't have the money to go back now as I'm a poor college student. Do your research on the mufflers. Each one will have a different kind of sound to it.
Flowmaster, Spin-tech will give you a deep but raspy sound
Magnaflow, Borla will give you a deep smoother tone, not to raspy.
So it's all about what you think you'd like. Do you just want a nice deep sound to make it sound like you've got more than a little V-8 under your hood, or would you like more of a hot-rod kind of sound that will turn heads when you drive by. Goodluck deciding.
__________________ David~2001 Toyota Tundra 4X4 TRD SR5~SSautochrome headers~Single 2.5" exhaust w/ Flowmaster 50 series delta flow muffler~K&N FIPK intake system w/True-flow filter~ASP underdrive pulley~Hellwig Anti-Sway Bar(removed)~Powertrax No-slip~Bilstein 5100 front and rear w/AAL~Diff breather mod~255/85 BFG M/T on Wheelers Black Steelies Type B~Custom Rocksliders~Skid Row front skid plate~Custom Transfer case skid plate
i would do just a muffler swap but then again, that and just a tip doesnt look right i think! but then again i havent seen any pics of different tips to bolt on! My local shop claims no loss of low end with 2.25 inch piping i believe from the cat to the muffler and 2.5 dual out! sooo im stuck!
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 89/93 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
what about switching out the muffler only using a single in dual out and then just adding 2.5" piping out with duals?? this way im not changing anything but the muffler and the exiting pipes?
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 89/93 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
what about switching out the muffler only using a single in dual out and then just adding 2.5" piping out with duals?? this way im not changing anything but the muffler and the exiting pipes?
Wouldn't that setup be like running a 5" diameter pipe out of a single in single out muffler? That sounds like your gonna lose a lot of low end to me.
__________________ My 03 Tundra v6 AC SR5 mods:URD lightened crankshaft pulley(soon) | Xtreme Alloy 1079 | 285/75-16 BFG's | Spintech ProStreet dumped | Total Chaos str/rck bushings |Camburg UCAs| TRD 4X4 v8 coil | Daystar 2.5" spacers | TRD yellow-blue shocks | 5100's |No-Slip Locker w/Mobile1 synthetic dif. oil | B&M transmission cooler | 911 performance brake pads | Hellwig swaybar(need quick disconnects) | Front seat covers | 35% Tint 2 front windows | Drop-in bed liner | clear-red-clear tail lights | Clear corners | AMI 21" polished antenna | Challenger steps | Toyota skid plate | Demello bed bar w/ cheapo fogs re-wired and running 100w H3's | Color matched mirror covers| Debadged | PermaShield teflon
Wouldn't that setup be like running a 5" diameter pipe out of a single in single out muffler? That sounds like your gonna lose a lot of low end to me.
But what about the guys that are running a dumped muffler?
The atmosphere is a bit bigger than 5 inches Plus the muffler, especially a flowmaster will help to keep the backpressure.
__________________ David~2001 Toyota Tundra 4X4 TRD SR5~SSautochrome headers~Single 2.5" exhaust w/ Flowmaster 50 series delta flow muffler~K&N FIPK intake system w/True-flow filter~ASP underdrive pulley~Hellwig Anti-Sway Bar(removed)~Powertrax No-slip~Bilstein 5100 front and rear w/AAL~Diff breather mod~255/85 BFG M/T on Wheelers Black Steelies Type B~Custom Rocksliders~Skid Row front skid plate~Custom Transfer case skid plate
But what about the guys that are running a dumped muffler?
The atmosphere is a bit bigger than 5 inches Plus the muffler, especially a flowmaster will help to keep the backpressure.
Oh, they sacrifice low end torque too don't fool yourself on that one.
But the majority do it knowingly for the tone the get from the dump.
__________________ My 03 Tundra v6 AC SR5 mods:URD lightened crankshaft pulley(soon) | Xtreme Alloy 1079 | 285/75-16 BFG's | Spintech ProStreet dumped | Total Chaos str/rck bushings |Camburg UCAs| TRD 4X4 v8 coil | Daystar 2.5" spacers | TRD yellow-blue shocks | 5100's |No-Slip Locker w/Mobile1 synthetic dif. oil | B&M transmission cooler | 911 performance brake pads | Hellwig swaybar(need quick disconnects) | Front seat covers | 35% Tint 2 front windows | Drop-in bed liner | clear-red-clear tail lights | Clear corners | AMI 21" polished antenna | Challenger steps | Toyota skid plate | Demello bed bar w/ cheapo fogs re-wired and running 100w H3's | Color matched mirror covers| Debadged | PermaShield teflon
Backpressure does not help low end torque, exhaust gas velocity does. No back pressure is ever good for power. A single inlet dual outlet exhaust of 2.5" will cause exhaust gas velocity to slow down at lower engine RPM and make it harder for the engine to pump the exhaust gases out so you'll loose low end torque and horsepower.
Do a search under RockyMtnRay or V8toilet and you'll find a lot of information on this subject.
You could set up a single exhaust system and use a dummy pipe to simulate a dual exhaust.
__________________
stock exhaust
Formerly Modified JBA headers now SSautochrome headers temporarily
TRD LSD
Extang lift off tonneau
Hankook DynaPro AS RH03
stock air filter & box
220 HP @ 4800 RPM
302 TQ @ 3400 RPM Run With Spintech Sportsman XL muffler, stock air filter, and JBA headers
208 HP @ 4800 RPM
285 TQ @ 3400 RPM Run With Spintech Sportsman XL muffler, TRD air filter, and stock manifolds
204 HP @ 4800 RPM
271 TQ @ 3400 RPM Bone stock
Quarter mile 15.526 @ 87.17 mph bone stock in 40-degree weather 2WD SR5 V8.
Quarter mile 15.389 @ 88.66 mph modified in 60-degree weather 2WD SR5 V8.
0-60 IN 6.88 seconds on G-tech
Dyno run results click here
Dyno run 2 results click here
True you could do that but it's really not that horrible to loose some low end torque. What I lost on my low end my high end roars. And to be honest, when your on the street and floor it next to someone, your rpms sure don't drop.
And I don't know about a dummy pipe. That's srange, and just extra weight that's not useful.
__________________ David~2001 Toyota Tundra 4X4 TRD SR5~SSautochrome headers~Single 2.5" exhaust w/ Flowmaster 50 series delta flow muffler~K&N FIPK intake system w/True-flow filter~ASP underdrive pulley~Hellwig Anti-Sway Bar(removed)~Powertrax No-slip~Bilstein 5100 front and rear w/AAL~Diff breather mod~255/85 BFG M/T on Wheelers Black Steelies Type B~Custom Rocksliders~Skid Row front skid plate~Custom Transfer case skid plate
Well, I had a Magnaflow put on for around $200. Simple muffler swap so I don't think a Flowmaster is any cheaper.
However, I have the T3 Tundra which came with TRD dual (single in/ dual out) exhaust so it was a simple muffler swap for me. Plus, the local shop didn't have the polished Magnaflow only the brushed stainless so the cost was a little less.
Something to consider.
And yea, I have a nice deep low tone instead of the raspy Flowmaster sound. Which is what I wanted.
__________________
2003 Tundra AC T3 Black
TRD sway bar, leather captain's chairs, line-x bed liner, true flow intake, TRD dual exhaust (replaced muffler with Magnaflow), bed extender. Color keyed bumpers, mirrors, and fender flares. 5% tint completed. Alpine stereo installed. Black Westin nerf's installed. JBA Headers---Installed. FabTech lift completed. Black bull bar completed.
Soundstream amps (2). Alpine IVA-W205.
Your still looking into an exhaust system?? Just pick one and be done with it,lol
Quote:
Originally Posted by Jetes03tundra
yeah but the magnaflow stuff is too expensive!
__________________ Toyota for life05 SR5 DC 4x4- Mods include:Toytec 3" lift w/1.5"AAL & diff drop,Weld Mountain Crushers w/ 285 Nitto Terra Grapplers, Extang Platinum bed cover, oem bed liner,front tint to match back, oem front skidplate, K&N Air filter,Lund smoked bug shield, Challenger ss step bars,8 piece Superior Dash Kit and an ss Magnaflow muffler#14586 with an ss Valor tip.
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exhaust
David~2001 Toyota Tundra 4X4 TRD SR5~SSautochrome headers~Single 2.5" exhaust w/ Flowmaster 50 series delta flow muffler~K&N FIPK intake system w/True-flow filter~ASP underdrive pulley~Hellwig Anti-Sway Bar(removed)~Powertrax No-slip~Bilstein 5100 front and rear w/AAL~Diff breather mod~255/85 BFG M/T on Wheelers Black Steelies Type B~Custom Rocksliders~Skid Row front skid plate~Custom Transfer case skid plate
Plus the muffler, especially a flowmaster will help to keep the backpressure.
Your still looking into an exhaust system?? Just pick one and be done with it,lol
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