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Engine & DrivetrainDiscussions about the engine and drivetrain of your vehicle.
This is a discussion thread titled "Tundra Exhaust", within the Engine & Drivetrain forum, part of the Technical & Vehicle Assistance Forums category.
I know I know for some reason I am stuck on this subject. In past post we have noticed that the Tundra stock exhaust is well tuned and any after market system would more than likely decrease torque and mpg. It seems everything I read seems to beg the differ. I do not know if this is a marketing scam or what????
Muffler housing and double wall exhaust tips are highly polished with the TRD logo etched on the outer sides of the tips. This system is legal in all 50 states and does not exceed the regulatory 95 dB sound levels. Peak performance offers up to a 4.8% ft/lb gain of torque, as well as up to an additional 8 HP over stock. This system is used but in like new condition. It fits all V8 and V6 Tundra’s 2000 and up.
the catch is in the phrase "up to". the gains are at peak output, they dont mention the losses down lower in the rpm range.
also, the downside people found was with the duals, dunno about the single exhaust, also people found negatives when they increased pipe size or added duals as opposed to changing to a higher flow muffler.
the catch is in the phrase "up to". the gains are at peak output, they dont mention the losses down lower in the rpm range.
also, the downside people found was with the duals, dunno about the single exhaust, also people found negatives when they increased pipe size or added duals as opposed to changing to a higher flow muffler.
-sean
What he said.
Just replace the muffler and you'll realize gains and money in your pocket.
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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
I have the TRD exhaust and have not noticed any change in performance either positive or negative. When I first installed it my mpg went down, but that was because I kept punching it so I can hear it. Honestly, if you get the TRD exhaust you are pretty much getting it for looks and sound. Oh yeah, it's not very loud either. It's actually probably one of the quieter exhaust systems.
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'01 Color-Keyed Limited Tundra TRD 4x4
JBA Headers, TRD Exhaust, IS Grill, IS Bilsteins, Hellwig Sway Bar, AR-23 wheels w/ 265/75 Yokohama AT's, SnugTop XV Shell, BedRug, Yakima Rack
I 2nd that thought. I have the TRD duals and did not notice any difference in performance. I think it is mainly because the computer is governing power output below 3k rpms anyway on 03 and newer trucks. My time 0-60 didnt drop any.
There was a noticable gain about 1000 miles on the ODO after installing the JBA headers though. Now my truck, at 3k RPMs, between the added power of the JBA headers and the compuer (finally) opening the throttle all the way the thing just takes off. So much so it damn near breaks the tires loose at about 30mph. So to get the best accelleration ive found i need to modulate the throtle from a dead stop so that my foot is all the way to the floor at the same time the engine hits 3k rpm, then its like the truck has a turbo or something. BIG UMPH>>>>GONE!
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Tundra Exhaust
Honestly, if you get the TRD exhaust you are pretty much getting it for looks and sound. Oh yeah, it's not very loud either. It's actually probably one of the quieter exhaust systems.
Linear Mode
