Can u clarify this for me.
With Advanced Sensors + PTL equipped i could perform an action before reveal the maneuver , trigger PTL , performing a free action , receive a stress , execute a green maneuver , clear the stress and skip the action step.
Correct?
Yes.
A favorite move of the B-Wing when it came out and since used by other ships.
Yup.
Theres actually a number of ways to do this now.
Coordinate Action (Epic or Upsilon Shuttle have this)
BB8
Adv Sensors
Pattern Analyzer
All of these can do a double action on a green maneuver and be unstressed, though they all do it differently.
Coordinate passes an action to a PTL/EI ship, which does 2 attacks for a stress then reveals a green on their normal move.
BB8/Adv Sensors both do a pre-move action enabling PTL/EI before the green move, though BB8 doesnt make you skip your action step.
Pattern Analyzer lets you do a green maneuver, perform action, PTL/EI, THEN do the assign/remove stress step from the green maneuver.
Going to work for upsilon shuttle since kylo ren ticks all the marks needed. yes this does work
BB8 actually pushes this the furthest (well the furthest I can think of anyway) since with it you reveal a green to get a "free" barrel roll, that can be used to trigger either PTL or EI for a second action resulting in stress add, make green maneuver, clear stress then proceed with your "take action" step for a total of 3 actions in one turn with 0 stress. LOTS of fun. 
Four actions with Snap, so long as you don't really need to turn at all...
Plan a green 2- or 3-straight
Reveal dial and take a barrel roll
Execute 2- or 3-straight
Take free boost from Snap's ability
PtL for Focus or TL off the Boost
Take stress from PtL
Check and clear stress from performing a green maneuver
Take remaining action of either TL or Focus
"Snap" Wexley (28)
Push the Limit (3)
BB-8 (2)
Pattern Analyzer (2)
Autothrusters (2)
Total: 37