HKS 32016-BT003 Exhaust System Instruction Manual

: June 2, 2024
: HKS

Table of Contents

HKS 32016-BT003 Exhaust System
Installation Manual
Product Precautions
Installation Precautions
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HKS 32016-BT003 Exhaust System

Specifications

Part Number: 32016-BT003
Name of Product: Hi-Power
Application: Scion FR-S (2012-2016), TOYOTA 86 (2017-2021), TOYOTA GR86 (2021), SUBARU BRZ (2012)

Product Information:
The Hi-Power exhaust system is designed for specific car models including Scion FR-S, TOYOTA 86, TOYOTA GR86, and SUBARU BRZ. The kit includes main muffler, mid-pipes, bolts, washers, nuts, gaskets, and a manual. It is essential to handle the product with care to avoid damage during installation.

Installation Instructions

Confirm Before Installation: Ensure all provided parts are available before starting the installation process.
Product Precautions:
- Handle the exhaust system with caution as it can become extremely hot.
- Avoid touching hot sections of the exhaust to prevent burns.
- Avoid contact with oil or brake fluid to prevent fire hazards.
Installation Precautions:
- Follow installation instructions precisely.
- Use a torque wrench to tighten screws to factory torque specifications.
- Avoid excessive force when dealing with rusted nuts and bolts. Wear heat-resistant gloves to prevent burns during service.

FAQ :
Q: What should I do if I encounter difficulty loosening rusted nuts and bolts?
A: Use a spray-type lubricant and the correct tools to loosen the nuts and bolts. Avoid excessive force that may cause them to break. Always wear heat-resistant gloves to prevent injury.

HKS Exhaust System User &

Installation Manual

Conﬁrm Before Installation

Part Number : 32016-BT003
Name of Product : Hi-Power
Application : Scion FR-S (2012～2016)
- TOYOTA 86 (2017～2021)
- TOYOTA GR86 (2021～)
- SUBARU BRZ (2012～)

Please make sure that the kit has all the provided parts listed below.
Be careful when handling this product; avoid dropping or giving it excessive impact. Otherwise, it may result in product damage or improper installation.

| Parts List / Hardware| QT.
---|---|---
①| Main Muffler| 1
②| #1 Mid-Pipe| 1
③| #2 Mid-Pipe| 1
④| Bolt (M10 P=1.5 L=25)| 4
⑤| Flat Washer (M10)| 8
⑥| Spring Washer (M10)| 4
⑦| Nut (M10 P=1.5)| 4
⑧| Ring Gasket (φ75)| 2
⑨| Manual| 1

Part Number : 32016-BT003
Name of Product : Hi-Power
Application : Scion FR-S (2012～2016)
- TOYOTA 86 (2017～2021)
- TOYOTA GR86 (2021～)
- SUBARU BRZ (2012～)

HKS-320-6-BT003-Exhaust-System-1

Thank you for purchasing HKS exhaust system. Please read this User & Installation Manual thoroughly before using this product so that you will understand and use product correctly. Please conﬁrm that the contents are correct before installation on the vehicle.

Foreword

Replacing exhaust systems entails dangerous work that only mechanics with specialized training should perform in an automobile service shop with adequate facilities. For untrained customers to install an unfamiliar product could be dangerous as it could result in injury and/or severe burns. Please request a specialist service shop to do the installation.
Do not perform any illegal modiﬁcations on this product, such　as cutting the pipe and/or removing the internal components of the muﬄer.
Our company shall not bear any responsibility should you, the　customer, or a third-party cause a breakdown of the product and its auxiliary product through modiﬁcation or disassembly, or for damages caused by problems resulting from its misuse.
This product and its parts may be revised without warning to the customer.
Due to regulations, it is not legal to drive any vehicle with the catalytic converter or any other emission device removed or modiﬁed (Unless speciﬁed by local regulations).

Product Precautions

When the engine is turned on or immediately after it is stopped, the exhaust manifold, exhaust pipe, catalyst and muﬄer are extremely hot. Be extra careful not to touch the section that exits the rear of the vehicle. You may suﬀer burns if you touch this or any section of the exhaust system. Please note that when you load or unload items from the trunk, your clothing could burn or melt if it touches the tail-pipe. Please take caution around the surroundings when you stop or park the car.
Oil or brake ﬂuid split on the exhaust manifold could burst into ﬂames.
Exhaust gases contain toxic substances. There is always a danger of carbon monoxide poisoning if you continue to work in a poorly ventilated garage or warehouse with the engine running. Always turn oﬀ the engine and check for adequate ventilation before working in an enclosed space. Be especially careful when pets and children are near the installation site. Take note of wind direction when running a vehicle near people.
This aftermarket exhaust improves exhaust eﬃciency and enhances the performance characteristics of the vehicle. Make certain that the brakes have been serviced completely and verify the brake performance and safety check all under carriage components.
This exhaust system is designed to have a safe clearance from the road surface with the vehicle at standard (stock) height. Therefore, if the vehicle is modiﬁed and body height is lowered to an extremely low level, the muﬄer could become damaged or may damage other objects when it comes in contact with the road surface or protruding objects. Please do not lower the height of the vehicle to extreme levels because exhaust gas could leak from a damaged exhaust system.
Even if parts in the emission system are used correctly, there is the possibility of deteriorating sound muﬄing performance from toxic substances in the exhaust gases or corrosion causing holes in the product depending on the usage of the automobile. If this is the case, please consult promptly with your dealer or service shop. If the product had lost its original capabilities, please have it exchanged with the same product.
If corrosion is left untended, this could cause ﬁre from leakage of exhaust gas under the lower part of the chassis. Moreover, the driver could be ﬁned for driving a poorly maintained vehicle.
It is the legal responsibility of the driver to safely upkeep his/her car. Periodic inspection and service is essential for safety and to prevent pollution. Be certain that routine inspections are made as well as periodic inspections and parts replacement if necessary.
While the product of our company uses carefully selected materials, and the product is manufactured under strict quality control standards in consideration of durability, the product could corrode and develop holes at an unexpectedly early stage if the vehicle is driven under adverse conditions. Moreover, the product could be hit by small rock and other road debris that may damage or cause holes in the product. Please be very careful because this could cause leakage of exhaust gases.
The law prohibits the removal of the catalytic converter or removing the interior components of it. Please refrain from such action as this could lead to environmental pollution.
Exhaust components on automobiles sometimes reach very high temperatures. Do not leave the vehicle over dry grass or other ﬂammable materials with the engine running or even after immediately turning oﬀ the engine.
This could cause a ﬁre. Please stop or park your vehicle in an area where there are no ﬂammable objects under the vehicle.
When using your vehicle, refrain from revving or idling the engine for extended periods of time. This could cause deterioration of the sound muﬄing material in the muﬄer. The heat from stagnant exhaust could cause breakdowns of electrical parts and auxiliary parts in the engine compartment.
Do not store or leave vehicle in humid areas or where salt is prevalent. This could cause deterioration and corrosion of parts.
Please understand that using your vehicle in various types of races, circuit runs and other special use could markedly lower the durability of the product.

Installation Precautions

When installing the product, make sure all instructions are followed precisely. Use a torque wrench and tighten the screws to the regulation (factory) torque so as to prevent the screws from loosening while the vehicle is in operation.
Exhaust manifolds and catalytic converters can become extremely hot during usage. Coming in contact with a hot exhaust system may result in severe burns. Only work on the vehicle after it cools down. Please use heat resistant gloves during service to prevent burns.
Rust may make it diﬃcult to loosen the nuts and bolts on the exhaust system. Use a spray-type lubricant and the correct tools to loosen the nuts and bolts and refrain from using excessive force that may cause the nuts and bolts to break. Always use heat-resistant gloves to prevent injury to hands.
Exhaust system replacements are usually performed underneath of the vehicle. It is dangerous to replace the system if the lifted vehicles is in an unstable condition. Be certain to work safely by using a speciﬁed lifting machine for vehicles. Never work underneath of the vehicle lifted only by a standard car jack, as this could be extremely dangerous.
Replacing of an exhaust system entails simultaneous tightening of nuts and bolts located separately, and working in situations where a heavy system is supported from below. Therefore,working alone could be very dangerous. Always work with two or more persons.
Be careful to maintain the proper clearance when installing a new exhaust system. Please be particularly careful when working near brakes, fuel line, drivetrain and electrical systems.
If you ﬁnd cracks and other deterioration in the rubber exhaust hangers, replace them with the vehicle manufacturer’s new standard parts.
After the standard (stock) exhaust system is removed, disassemble them into shortest possible pieces and store them horizontally to allow for and moisture dissipation.
In some instances it may be necessary to cut the stock exhaust into two pieces to remove it. The stock exhaust was installed before the rear suspension was installed on the vehicle.
The replacement HKS exhaust system will bolt directly on and does not require any modiﬁcation ( to the vehicle or the exhaust system).

WARNING
Protect against injuries & burns.

“stock parts” in this manual refers to the manufacturer’s genuine parts.

NOTE

Do not reuse the gasket.
All rubber stays for hanging should be reused in the stock parts.

Remove Stock parts
Remove stock mid pipe and main muffler.
Remove the stock rear bumper.
Remove stock rear bumper side covers on both right and left sides.
NOTE
Please follow the automobile manufacturer’s work procedures when removing stock parts.
Temporary assembly of #1 Mid-Pipe
Align the #1 mid-pipe in the proper position.
Insert the stock spherical gasket between the rearward ﬂange of the stock front pipe and the frontward ﬂange of the #1mid-pipe.Pass the stock spring through the stock bolt.Pass it through the hole of the ﬂange from the back, then tighten the stock nut from the opposite side for assembling temporally.
NOTE
Reuse stock parts for bolts, springs, and nuts.
Temporary assembly of #2 Mid-Pipe
Align the #2 mid-pipe in the proper position.
Attach the stock rubber stay on the hanging hooks.
Insert the provided ring gasket (φ75) between the rearward ﬂange of the #1 mid-pipe and the frontward ﬂange of the #2 mid-pipe.
Put the ﬂat washer onto the provided bolt and pass it through from the front side. Attach the provided ﬂat washers, spring washers, and nut in this order from the opposite side for assembling temporally.
Temporary assembly of Main Muﬄer
Align the main muﬄer in the proper position.
Attach the stock rubber stay in 2 places on the hanging hooks.
Insert the provided ring gasket (φ75) between the rearward ﬂange of the #2 mid-pipe and the frontward ﬂange of the main muﬄer.
Put the ﬂat washer onto the provided bolt and pass it through from the front side. Attach the provided ﬂat washers, spring washers, and nut in this order from the opposite side for assembling temporally.
Assemble the entire system
Make sure all ﬂanges ﬁt ﬁrmly.Check the position and clearance between each pipe, muﬄer, underﬂoor, cross member, or other surrounding parts.
Tighten the bolt and nut that are temporarily assembled with speciﬁed torque in the order from the front side of the vehicle to the rear side.
The Ti Tip of the outer side tail of the main muﬄer can be adjusted the position back and forth by loosening the Ti Tip ﬁxing bolts (2 places) of both sides. Tighten the Ti Tip ﬁxing bolts (2 places) with the speciﬁed torque after determined the preferred position of the Ti Tip.
Check the position and clearance between the tailpipe and bumper are correct. Re-tighten the coupling sections if necessary.Insuﬃcient clearance may cause abnormal sounds or the resin-made bumper may melt by heat.
Check whether the proper position of the tail pipe and the bumper and the clearance are maintained (Approx. 10 mm).
Tighten the bolt and nut again from the beginning if there are any problems. Insuﬃcient clearance may cause an abnormal sound or melts the resin-made bunper by the heat.
Verifying a Correct Installation
Check the clearance for each section by shaking the muﬄer after installing the product.
Start the engine, idle for a while, and rotate up to approx 2500 rpm. Then, inspect that there is no leaking of the exhaust air and abnormal sounds from the ﬂange at each section.
Drive for a while, then inspect that there is no leaking of the exhaust air and abnormal sounds from the ﬂange at each section.
If there are any problems found in the (1) to (3), install the product again from the beginning.