Banks Power Ford Trucks: (Gas ’04 - 08 F-150 V6 & V8) Exhaust- TorqueTube system '04-08 F-150 5.4L (late-body) - Manual (Page 4)

1.
With the vehicle in neutral, safely
raised, ground wire(s) disconnected,
and precautions in place, remove the
factory exhaust system.
2.
To provide better access to the
manifolds remove the front wheels from
the vehicle. If the vehicle is equipped
with inner front fender shields, remove
them for improved access.
Note: Before removing the lug nuts,
make sure a capable torque wrench is
available to tighten the lug nuts to the
manufacturer’s torque specifications
3.
Disconnect the four (4) oxygen
sensors connectors on the y-pipe from
the vehicle harness.
4.
Remove the factory y-pipe from the
vehicle by removing the four (4) bolts
attaching the factory manifolds to the
exhaust. Remove the two (2) bolts on
the y-pipe support hanger bracket.
Loosen the clamp on the y-pipe outlet.
Remove the y-pipe from the vehicle.
See Figure 1.
5.
Begin to remove both exhaust
manifolds by backing each nut away
from the cylinder heads at least one
turn, then use a 5mm 6-point socket
to remove each stud from the heads.
As an alternate method, remove the
nuts from the studs and then remove
the studs.
TorqueTube Installation
TORQUE TO
18 FT-LBS
Y-PIPE SUPPORT
BRACKET
Y-PIPE
OUTLET
LEFT
O
2
SENSOR
RIGHT
O
2
SENSOR
TORQUE TO
32 FT-LBS
FORWARD
Figure 1
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