JUN B L G70 Performance Catback Exhaust System Instruction Manual

JUN B L G70 Performance Catback Exhaust System

Warning

1. This product must be installed or replaced at a service facility that maintains proper certification or a place equipped with designated equipments. This product should not be modified by any third party personnel. If the work is done by non- authorized or non-qualified personnel, it may cause a serious malfunction on the vehicle or shorten the lifecycle of it.
2. Since the installation work requires the mechanics to work under the vehicle, one must use qualified car-lift for this job. Should the vehicle fall from the lift or installed incorrectly, it may cause death or significant malfunction on the vehicle.
3. The most part of exhaust system generates significant amount of heat, the installation work must be performed after the vehicle is sufficiently cooled down.
4. Certain parts of the product, including exhaust manifold catalyst, are flammable. It is advised that the product is installed in a fire-ready location. Fire may cause burn on your skin.

Product Installation

1. Before installation, please check if you have the right product for the subject vehicle.
2. When you separate a genuine part from the vehicle, please follow instruction of the vehicle manufacturer.
3. Before installing the product, make sure you don’t drop it or expose to an impact.
4. When exhaust manifold, catalyst converter, front pipe, sub pipe and other parts are assembled with other company’s product, please check if there is loss of efficiency or interference/friction due to changes in numbers before you assemble them.
5. The sequence of assemble is the reverse of disassemble.
6. See if there is deformation on flanges or gas leakage after installation.
7. Locate the rubber hanger that supports mufflers to the right position.
8. Make sure that body of muffler or exhaust pipes do not touch the chassis, fuel tank and bumper. Check electrical wirings, fuel pipe, air-conditioner pipe, oil-pressure hose, break pipe or any hoses are overheated before you operate the vehicle.

After the Installation

1. Be careful for speed bumps or bumpy roads if the vehicle has been lowered.
2. The Exhaust sound may differ from each vehicle even if they are the same car.
3. There may be louder sound generated from the vehicle until the sound absorption material is spread by exhaust heat.
4. There may be burning odor generated from the vehicle until the sound absorption material is spread by exhaust heat.
5. Do not separate catalytic converter from the vehicle.
6. Make sure the sound of exhaust is within the regulations.

Installation instructions

Remove the original exhaust system :

Put the vehicle on a lift.
WARNING: To avoid risk of vehicle damage, personal injury or death, make sure the vehicle is safe and properly installed!

1. Loosen and remove bolt (12mm) that secures the middle body bracket.
2. Remove the main muffler by loosening bolt (19mm) that secures the main silencer.
3. Remove the middle muffler by loosening bolt (19mm) that secures the middle silencer. (See Photo 1)
   Installation tip: Lubricate the rubber brackets and bolts for easy removal.

Electronic module wiring connections:

1. Electronic module is installed in the battery space under the trunk.
2. Main power line may be connected to the battery (+) and (-) terminals.
3. If you want to cut off the power when the ignition is off, connect (+) terminal to fuse linked to ACC, and connect (-) terminal to self-ground. (See Photo 2)
   However, 2.0T vehicles may not have a fuse connected to ACC. If not, connect it to the battery.

Electronic module wiring connections:

1. For the wiring connected to rear muffler electric motor, use the wiring path shown in the photo.
2. To protect the cable, cut the middle of the rubber bushing and pass the wiring through the rubber to connect the wiring outside the vehicle body.

Electronic module wiring connections:

1. The wire that has passed through rubber bushing is moved left and right and passed over the aluminum heat sink.
2. Drill a small hole in the aluminum heat sink and secure the wiring with cable ties.
   Caution : When fixing with a cable tie, do not press the wires.

Electronic module wiring connections :

1. The wire that has passed through rubber bushing is moved left and right and passed over the aluminum heat sink.
2. Drill a small hole in the aluminum heat sink and secure the wiring with cable ties.

Electronic module wiring connections :

1. As explained before, main power line can be connected to battery (+) and (-) terminals.
2. If you want to cut off power when the ignition is OFF, connect (+) terminal to fusemthat is linked to ACC and connect (-) terminal to self-ground. (See photo 6)
   Note: However, 2.0T vehicles may not have a fuse connected to ACC. If not, connect it to the battery.

Electronic module wiring connections :

1. Fuse is connected to the fuse that cuts off power when the engine is turned off.
2. Stinger 3.3T vehicle can be connected to the top 2nd fuse.
3. You can use fuse connection wire as below photo 7, or cut the terminal to strip the wire and connect it directly to fuse.

Install the mid-muffler and end-muffler :

1. Install the mid-muffler using genuine nuts (19mm).
2. Fix the center crossbar in the reverse order of disassembly.
3. Install the end muffler using included gasket, bolts and nuts (14mm).
4. Connect the wiring to variable motor to complete installation.

Install the mid-muffler and end-muffler :

1. After installation is complete, start the engine and operate remote control to check whether the variable valve works well.
2. When power is connected, LED on the variable control module is turned on.
   Caution : If there is a problem in operation, check if LED on the variable control module is on. If not, check power connection again from the beginning

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