02 sensor problem during vtuning need help

[jpbo]

Good day
the bike a 2008 road king 45,00 kms start wiggle between 1900 to 2100 rpm while i was doing the third vtune run, i look to the vtune data and see the rear 02 sensor at theses rpm stick around 160mv and the rear injector bpw also very low compared to the front ,while the front works normally, also there is big backfire at these rpm in deceleration, i replaced the rear oxygen sensor with no change, i checked for air leak all seems good, before replacing something else i'd need advices, i don't have the breakout box, hope it's not the ECM
at others rpm idle and cruising speed the bike run normally,
i attached zip master tune data

is that happened to someone?

 

[Jack Klarich]

Harley Davidson Forums
Have a look here, and report back

 

[jpbo]

sorry , i forgotten , i get the dtc code p0151

thanks

 

[Jack Klarich]

sorry , i forgotten , i get the dtc code p0151

thanks

That is a rear O2 sensor reading lean, not enough fuel or a leak in the rear intake
Have you tried the wiggle test on the injector wire? Some times the wire is TOO shrt an you lose the connection@the injector

 

[jpbo]

i have checked leak in the rear i saw nothing
when i recorded with datamaster and look the data i saw the front sensor and injector doing good
thanks