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The One

Subaru WRX Exhaust Shootout

Robert Choo
Nov 16, 2002 SHARE

Everybody is always searching for The One. As a toddler, you look for your favorite pacifier; as a child it is your favorite toy. You look for The One in adolescence as you fall in and out of puppy love. Now you are an adult and still you want The One, the only - the best damn exhaust system out there for your car.

Turbo aims to help you in this department by tracking down twelve (count 'em buddy) exhaust systems for the very popular Subaru WRX. All WRX aftermarket exhaust manufacturers were invited to participate in this shootout and the dozen you see below obliged.

They witnessed firsthand their products being put to the test under controlled conditions to see which one would claim top honors; the summa cum laude of exhaust.

As with our last exhaust shootout (September 2002), we've compiled for you several different attributes of each exhaust system: price tag, weight, size, horsepower, torque and sound.

This time we added a few other variables to the mix, including highest horsepower and torque gain at any given rpm and piping diameter. Depending upon which characteristic you value most, you can decide for yourself which system is going to be The One for your ride. Some like 'em loud, some are horsepower whores, others like the biggest pipe (compensation issues? I wonder) and some are on a budget.

Four pizzas, eleven hours straight of dynoing, and twelve exhaust systems later, what you see below are the vital stats we came up with. The search is now over...and The One waits to be crowned.

0212tur_exhaust_01_zoom Photo 1/13   |   Factory Subaru
ManufacturerFactory Subaru
TypeStock
MSRP$715.00
Weight37.4 pounds
Tip Diameterdual 72mm tips (2.834 inch)
Sound Decibel @ Idle87dB
Sound Decibel @ 3000 rpm86dB
Peak Horsepower191. 8 Hp @ 5600 rpm
Peak Torque197.1 Tq @ 3800 rpm
Largest Horsepower gain over stockN/A
Largest Torque gain over stockN/A
Piping Diameter52mm (2.047 inch)
Exhaust System ConstructionMild steel canister and piping
0212tur_exhaust_02_zoom Photo 2/13   |   5Zigen
Manufacturer5Zigen
TypeFireball
MSRP$700.00
Weight31.3 pounds
Tip Diameter100mm (3.937 inch)
Sound Decibel @ Idle98 dB
Sound Decibel @ 3000 rpm105 dB
Peak Horsepower198.7 Hp @ 5625 rpm
Peak Torque201.3 Tq @ 4400 rpm
Largest Horsepower gain over stock12.0 Hp @ 4400 rpm
Largest Torque gain over stock13.7 Tq @ 4400 rpm
Piping Diameter70mm (2.756-inch)
Exhaust System ConstructionPolished stainless steel canister with coated mild-steel piping.
Source5Zigen USA, Inc., (310) 608-5575
0212tur_exhaust_03_zoom Photo 3/13   |   Tanabe
ManufacturerTanabe
TypeRacing Super Medalion
MSRP$650.00
Weight24.0 pounds
Tip Diameter100mm (3.937 inch)
Sound Decibel @ Idle101 dB
Sound Decibel @ 3000 rpm107 dB
Peak Horsepower197.7 Hp @ 5600 rpm
Peak Torque199.6 @ 3600 rpm
Largest Horsepower gain over stock8.7 Hp @ 4200 rpm
Largest Torque gain over stock10.1 Tq @ 4200 rpm
Piping Diameter70mm (2.755 inch)
Exhaust System ConstructionPolished stainless steel canister with stainless steel piping.
SourceMackin Industries (Tanabe Distributor) (562) 946-6820
0212tur_exhaust_04_zoom Photo 4/13   |   Blitz
ManufacturerBlitz
TypeNur-Spec Racing
MSRP$698.00
Weight37.2 pounds
Tip Diameter115mm (4.527 inch)
Sound Decibel @ Idle104 dB
Sound Decibel @ 3000 rpm103 dB
Peak Horsepower{{{200}}}.2 Hp @ 5600 rpm
Peak Torque204.2 @ 3725 rpm
Largest Horsepower gain over stock13.9 Hp @ 4400 rpm
Largest Torque gain over stock15.3 Tq @ 4400 rpm
Piping Diameter{{{80}}} mm (3.150inch)
Exhaust ConstructionPolished stainless steel canister and piping
SourceBlitz North America, (714) 777-9766
0212tur_exhaust_05_zoom Photo 5/13   |   GReddy
ManufacturerGReddy
TypeEvolution
MSRP$699.00
Weight37.4 pounds
Tip Diameter115mm (4.527 inch)
Sound Decibel @ Idle94 dB
Sound Decibel @ 3000 rpm92 dB
Peak Horsepower200.9 Hp @ 5600 rpm
Peak Torque201.6 @ 4600 rpm
Largest Horsepower gain over stock9.8 Hp @ 4600 rpm
Largest Torque gain over stock10.6 @ 4600 rpm
Piping Diameter80mm (3.150 inch)
Exhaust System ConstructionPolished stainless steel canister with coated mild steel piping
SourceGReddy, (949) 588-8300
0212tur_exhaust_06_zoom Photo 6/13   |   Cobb Tuning
ManufacturerCobb Tuning
TypeN/A
MSRP$575.00
Weight26.6 pounds
Tip Diameter90mm (3.543 inch)
Sound Decibel @ Idle97 dB
Sound Decibel @ 3000 rpm103 dB
Peak Horsepower200.0 Hp @ 5600 rpm
Peak Torque202.7 @ {{{4000}}} rpm
Largest Horsepower gain over stock12.6 Hp @ 4400 rpm
Largest Torque gain over stock14.1 Tq @ 4400 rpm
Piping Diameter75mm (2.952 inch)
Exhaust System ConstructionPolished stainless steel canister with stainless steel piping.
SourceCobb Tuning, (972) 771-1555
0212tur_exhaust_07_zoom Photo 7/13   |   Supersprint
ManufacturerSupersprint
TypeN/A
MSRP${{{850}}}.00
Weight29.0 pounds
Tip Diameter90mm x 145mm Oval Tip (3.54 inch x 5.70 inch)
Sound Decibel @ Idle95 dB
Sound Decibel @ 3000 rpm101 dB
Peak Horsepower198.0 Hp @ 5700 rpm
Peak Torque201.3 Tq @ 3700 rpm
Largest Horsepower gain over stock12.2 Hp @ 4400 rpm
Largest Torque gain over stock13.7 Tq @ 4400 rpm
Piping Diameter63.5mm (2.500 inch)
Exhaust System ConstructionPolished stainless steel canister and piping
SourceSupersprint, (800) 648-7278
0212tur_exhaust_08_zoom Photo 8/13   |   HKS
ManufacturerHKS
TypeHi-Power
MSRP$670.00
Weight30.7 pounds
Tip Diameter120mm (4.724 inch)
Sound Decibel @ Idle97 dB
Sound Decibel @ 3000 rpm102 dB
Peak Horsepower202.9 Hp @ 5625 rpm
Peak Torque204.9 Tq @ 3650 rpm
Largest Horsepower gain over stock13.1 Hp @ 5620 rpm
Largest Torque gain over stock13.6 Tq @ 4200 rpm
Piping Diameter75mm (2.952 inch)
Exhaust System ConstructionPolished stainless steel canister with co@ed mild steel piping.
SourceHKS USA, Inc., (310) 491-3300
0212tur_exhaust_09_zoom Photo 9/13   |   A'PEXi
ManufacturerA'PEXi
Type{{{GT}}} Spec.
MSRP$749.00
Weight26.2 pounds
Tip Diameter115mm (4.528 inch)
Sound Decibel @ Idle{{{100}}} dB
Sound Decibel @ 3000 rpm104 dB
Peak Horsepower201.1 Hp @ 5625 rpm
Peak Torque201.5 Tq @ 4600 rpm
Largest Horsepower gain over stock9.9 Hp @ 4600 rpm
Largest Torque gain over stock10.6 Tq @ 4600 rpm
Piping Diameter75mm-85mm (2.953-3.346 inch)
Exhaust System ConstructionPolished stainless steel canister and piping
SourceA*PEX Integration (714) 685-5700
0212tur_exhaust_10_zoom Photo 10/13   |   Skunk2 Racing
ManufacturerSkunk2 Racing
TypeN/A
MSRP$599.00
Weight30.6 pounds
Tip Diameter100mm (3.937 inch)
Sound Decibel @ Idle102 dB
Sound Decibel @ 3000 rpm106 dB
Peak Horsepower199.3 Hp @ 5625 rpm
Peak Torque203.6 Tq @ 3600 rpm
Largest Horsepower gain over stock13.0 Hp @ 4400 rpm
Largest Torque gain over stock 15.7 Tq @ 4400 rpm
Piping Diameter75mm (2.953 inch)
ConstructionPolished stainless steel canister with stainless steel piping.
SourceSkunk2 Racing, (909) 808-9888
0212tur_exhaust_11_zoom Photo 11/13   |   MRT Performance
ManufacturerMRT Performance
TypeN/A
MSRP$795.00
Weight30.5 pounds
Tip Diameter100mm (3.937 inch)
Sound Decibel @ Idle96dB
Sound Decibel @ 3000 rpm104 dB
Peak Horsepower198.8 Hp @ 5700 rpm
Peak Torque202.8 Tq @ 3675 rpm
Largest Horsepower gain over stock13.6 Hp @ 4400 rpm
Largest Torque gain over stock15.5 Tq @ 4400 rpm
Piping Diameter75mm (2.953 inch)
ConstructionPolished stainless steel canister with stainless steel piping.
SourceRenick Motorsports (MRT Dealer), (714) 871-9300
0212tur_exhaust_12_zoom Photo 12/13   |   M2 Performance
ManufacturerM2 Performance
TypeN/A
MSRP$795.00
Weight34.9 pounds
Tip Diameterdual 76.2mm (3.00 inch)
Sound Decibel @ Idle94dB
Sound Decibel @ 3000 rpm94dB
Peak Horsepower195.9 Hp @ 5700 rpm
Peak Torque198.9 Tq @ 3675 rpm
Largest Horsepower gain over stock7.1 Hp @ 4200 rpm
Largest Torque gain over stock8.7 Tq @ 4200 rpm
Piping Diameter76.2mm (3.000 inch)
Exhaust System ConstructionPolished stainless steel canister with stainless steel piping.
SourceM2 Performance, (925) 686-9047
0212tur_exhaust_13_zoom Photo 13/13   |   Thermal Research & Development
ManufacturerThermal Research & Development
TypeN/A
MSRP$694.95
Weight26.2 pounds
Tip Diameter80mm x 111mm (3.150 x 4.370 inch) oval tip
Sound Decibel @ Idle101 dB
Sound Decibel @ 3000 rpm108 dB
Peak Horsepower198.3 Hp @ 5700 rpm
Peak Torque201.1 Tq @ 4300 rpm
Largest Horsepower gain over stock11.4 Hp @ 4400
Largest Torque gain over stock13. 4 Tq @ 4400
Piping Diameter76.2mm (3.000 inch)
Exhaust System ConstructionPolished stainless steel canister and piping.
SourceThermal Research & Development, (818) 998-4865
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By Robert Choo
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