ThunderMax PN#309-380 Sportster User Manual
Page 2
connector through the
opening between the frame
and the caddy, exiting behind
the right wing of the oil tank.
FX/FLST-G:
A
packet of
dielectric grease is included
with your ThunderMax. W hen
installing the ECM, apply the
provided dielectric grease to the inside lip of the
ThunderMax ECM to ensure the rubber weather seal
does not bind upon installation, and across the pin
casing on both 18 pin ECM connectors. Spread the
grease across all of the female terminal openings,
making sure the grease penetrates openings. This
grease will
help to maintain vital conductivity between the
ThunderMax and the 18 pin connectors.
added to the headers in a similar location as ’07-’11
models (3-4” from the cylinder head at the top of the
pipe). W eld-in bungs are available in straight or angled
style from many industry sources as well as plugs for the
stock 12mm sensors (video installation link on page 8).
On '07-'11, if you wish to cap off the bike side of the
harness connector, protective caps are provided. See Tips
and General Information section on page 8 for further
detail.
FX/FLST-K:
Once your wide-band sensors are installed,
route rear sensor harness under oil tank, feeding
connector plug up though opening in the right front
bottom of the battery cavity in the oil tank.
FX/FLST-H:
Apply dielectric
grease to the ThunderMax
oxygen harness connector
female terminals
to hepl
maintain vital conductivity,
and to the outer housing to
prevent
binding
upon
installation to the ECM.
FX/FLST-I:
Install the ThunderMax ECM onto the ECM
caddy; insert the oxygen harness connector into the
ECM with the imprinted “ThunderMax” logo facing up.
Tighten the (2) Phillips connector screws. Lift ECM and
install the two 18-pin connectors, ensuring they are fully
seated and latched. Replace ECM into the caddy.
FX/FLST-L:
Position
rear
oxygen
sensor
harness connector on
top of oil tank, just
forward of the battery
under battery ground
cable as shown.
FX/FLST-M:
Route front oxygen sensor harness behind
and under transmission with connector plug just under
the engine/transmission mounting boss; connect to front
oxygen sensor.
FX/FLST-J:
Unplug and remove factory oxygen sensors
from the exhaust pipes (rear sensor plug located under
oil tank). If using an exhaust system equipped with
18mm sensor bungs (‘07-‘11 style), install the supplied
sensors into the exhaust pipes and tighten. If retaining
factory exhaust headpipes, 18mm bungs will need to be
309-380 / 309-382 Installation / Setup
Guide V201
4.9.23
2