Will Optical bump change TDC offset if relearned?

[97diesel4x4]

Will Optical bump change TDC offset if relearned?
I set my actual timing at about 3.5 in time set mode
then i have 11.1 desired and 11.1 actual timing
and the snap-on mt2500 scanner reads the TDC offset as 5.9 i've read that this scanner reads different and that -1.94 reads 5.4
so does the Optical bump change the TDC offset number too?:dunno:

[97diesel4x4]

I'm wondering if the optical senser bump advanced the TDC offset some but not the base timing because its still at 3.5 in the time set mode
But when i exit the time set mode my base (actual) timing and desired are at 11.1 i read it was to be about 8.5 degrees

[foreman00081]

might want to try posting this over on dieselplace also if you havent already, theres a lot more 6.5 owners over there and i would think youd have a lot better chances of getting an anwser, good luck

[97diesel4x4]

I changed the optic bump back to stock setting and my timing dropped down from 11.1 to 10.0 and i relearned the TDC off set at 6.1 then in the time set mode the base timing was about 4.5 and setting code 1214 TDC offset so i turned the ip back some and got it at 3.5 with the actul timing at 7.0-7.5 degrees and a TDC offset of 5.9 with no more 1214 code.
It starts better now and the wot smoke is more of a gray black then the pitch black i was getting:eek: