MagnaFlow BMW 135I Stainless Cat-Back System PERFORMANCE EXHAUST - Manual

Step 1:( Carefully read all instructions before
installation) Start the removal process of the OEM
exhaust system. First remove the skid plate and
cross braces to facilitate extraction. Next unbolt the
front pipe flanges behind the catalytic converter.
Working front to rear carefully remove all hangers
from the rubber isolators and remove the system.
Step 2: Begin the installation of your new
MAGNAFLOW Performance Exhaust System by first
laying out all components to check content and
orientation. Start by attaching the D/S and P/S Inlet
Pipe Assemblies to the outlet of the catalytic
converters using the OEM fasteners. Next slip the
Resonator Assembly over the new Inlet Pipes.
Loosely secure using the supplied clamps and OEM
rubber isolators. Mount the Muffler Assemby to the
resonator Assembly, Locate hangers into OEM
rubber isolators and loosely secure using the
supplied clamps.
Step 3: With all components mounted loosely, adjust
the system for overall aesthetics and clearance of
frame & bodywork. (MAGNAFLOW recommends at
least 1/2" of clearance between the exhaust system
and any body panels to prevent heat-related body
damage or fire.)
Step 4: Once a final position has been chosen for
the new system, evenly tighten all fasteners from
front to rear. The supplied band clamps must be
VERY tight to properly align the pipes and prevent
leaks (Approximately 40ft-lbs). U-bolt clamps should
be tightened to approximately 30-35ft-lbs. Replace
Skid plate and cross braces. inspect all fasteners
after 25-50 miles of operation and retighten if
necessary.
Mufflers, Converters,
Systems and Tips
INSTALLATION INSTRUCTIONS
15527
2011 BMW 135i 3.0L Sport
Warning : When working on, under, or around
any vehicle exercise caution. Please allow the
vehicle's exhaust system to cool before removal,
as exhaust system temperatures may cause
severe burns. If working without a lift, always
consult vehicle manual for correct lifting
specifications. Always wear safety glasses and
ensure a safe work area. Serious injury or death
could occur if safety measures are not followed.
** Magnaflow Performance Exhaust recommends professional
installation on all their products
Magnaflow Performance Exhaust - 22961 Arroyo Vista Rancho Santa Margarita, CA 92688
Main #: 1-800-990-0905 Technical Support: 1-800-959-9226 ext 4500 12/06/10
P/S INLET PIPE
ASSY D/S INLET PIPE
ASSY
RESONATOR
ASSY
MUFFLER
ASSY
2X 2.50"
CLAMP
3.00"
CLAMP