staying in open loop

[chandler]

ive got the fatduc on my 08 hyper1100. my check engine light comes on alot and its the fatduc. i dont want to spend 500 on a dp ecu and still need a power commander so does diconnecting the o2 sensor keep it in open loop. then id set the power commander and remove the engine light which would always be on.

[krill]

Originally Posted by chandler

ive got the fatduc on my 08 hyper1100. my check engine light comes on alot and its the fatduc. i dont want to spend 500 on a dp ecu and still need a power commander so does diconnecting the o2 sensor keep it in open loop. then id set the power commander and remove the engine light which would always be on.

I had a fatduc on my Hyper for several months and never had the engine check light come on, maybe you have other problems

[chandler]

thats what the guy said when i bought it. still though id like to cancel out closed loop. will disconnecting the 02 do it ? id think it would as it does on a car. can i pull codes on it with the dash ? i hold the menu button on it up to go in to pro mode but i dont know how to operate it. ive gone p and down but i cant adjust anything. ive tried every button and nothing happens.

[hyperstrada77]

Check your error codes.

From page 17 in the owner's manual:

Pressing button (1, fig. 8) in position A “s“ gives access to
the MENU and the following functions are displayed one
after another:
Error (only if active)
RPM
BATT
LAP (OFF or ON)
LAP MEM
Clock setup
code (only if active

Button 1 is the toggle up/down button on the left switchgear, pos. A is up, so toggle up to retrieve the active error codes (this only works when the bike is stopped)

Error codes:
Error message Error
COIL 10.1 Horizontal cylinder coil error
COIL 10.2 Horizontal cylinder coil error
COIL 11.1 Vertical cylinder coil error
COIL 11.2 Vertical cylinder coil error
INJE 12.1 Horizontal cylinder injector error
INJE 12.2 Horizontal cylinder injector error
INJE 13.1 Vertical cylinder injector error
EXVL 23.4 Exhaust butterfly valve motor error
EXVL 23.5 Exhaust butterfly valve motor error
TPS 1.1 Throttle position sensor error
TPS 1.2 Throttle position sensor error
PRES 2.1 Pressure sensor error
PRES 2.2 Pressure sensor error
T.OIL 3.1 Engine oil temperature sensor error
T.OIL 3.2 Engine oil temperature sensor error
AIR 4.1 Air temperature sensor error
AIR 4.2 Air temperature sensor error
BATT 5.1 Battery voltage error
BATT 5.2 Battery voltage error
LAMB 6.1 Lambda sensor error
TILT 6.2 Lambda sensor error 2
ECU 30.0 Generic Engine Control Unit error
PK.UP 34.0 Pick-up sensor error
SPEE. 36.0 Speed sensor error
IMMO 37.0 Immobilizer error
IMMO 37.1 Immobilizer error
IMMO 37.4 Immobilizer error
IMMO 37.5 Immobilizer error
CAN 38.0 CAN communication line error