GrimmSpeed HiFlow CrossPipe User Manual

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GrimmSpeed HiFlow Crosspipe

Installation Instructions

2002+ Subaru WRX/STi/LGT/FXT

GrimmSpeed HiFlow Crosspipe Installation Instructions

Park your vehicle on a level surface. Fully engage your parking brake and
put wheel stops on the front and rear wheels to keep the vehicle from
rolling.

All GrimmSpeed exhaust components are intended for Off-Road use only.

1. Remove plastic splash guard (3) 10mm bolts and 4 plastic clips.

2. Remove passenger side exhaust collector heat shield (4) 12mm

bolts.

3. Remove driver side exhaust collector heat shield (2) 12mm bolts.

4. Loosen (2) 14mm bolts that connect passenger side exhaust

collector to up pipe.

5. Remove (2) 14mm bolts that connect passenger side exhaust

collector to crosspipe.

6. Remove (2) 14mm bolts that connect driver side exhaust manifold

collector to crosspipe. Drop crosspipe.

Grimmspeed

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7. Loosen (3) 14mm nuts that connect passenger side exhaust

collector to engine head.

8. Loosen (3) 14mm nuts that connect driver side exhaust collector to

engine head.

9. Install GrimmSpeed Crosspipe. Torque (4) 14mm nuts/bolts from

crosspipe to exhaust manifold collectors. Remember gaskets.

10. Torque (6) 14mm nuts that hold exhaust manifold collectors to

engine heads.

11. Torque (2) 14mm nuts/bolts from passenger side collector to up

pipe.

12. Reinstall heatshields.

13. Reinstall plastic splash guard.

NOTE: Tighten down crosspipe to exhaust manifold collector bolts first.

NOTE: If you are going to heat wrap the crosspipe, do NOT put heat wrap
over the flex section.

NOTE: You may notice a slight exhaust tick with new crosspipe. This is a
normal Subaru exhaust pulse. Since this piece is flowing more, you are just
hearing it more now.

Please contact us if you have any questions during installation.

651-414-9747 or [e-mail]

Thank you for your purchase!

Grimmspeed