As I am moving and go all the way through an ateriod do i still flip turn at the end or is that considered losing my action and it turns into a red straight?
If i do a red flip and go through an asteroid….
The answers you seek are on page 17 and 20 in the rulebook. 17 under "important" and 20 under "obstacles."
Link for the lazy: http://www.fantasyflightgames.com/ffg_content/x-wing/support/SWX01_XwingCoreRulebook_lowres.pdf
important: If the active ship is executing a
maneuver that causes it to overlap another ship,
instead treat its maneuver as a maneuver with the
same speed and color revealed on the dial.
moving into and through oBStacleS
When a ship executes a maneuver in which either
the maneuver template or the ship’s base physically
overlaps an obstacle token, follow these steps:
1. Execute the maneuver as normal, but skip the
“Perform Action” step.
2. The player rolls one attack die. The ship then
suffers any damage or critical damage rolled
(see “Suffering Damage” on page 16).
important: When overlapping an obstacle token,
the ship stays where it lands (on top of the token).
A ship that is overlapping an obstacle token during
the Combat phase cannot attack any ship but
may be targeted by other ships as normal.
From my reading of this, you should still do the K-turn for an obstacle but you roll to take damage.
And now a real link for the really lazy: 
http://www.fantasyflightgames.com/ffg_content/x-wing/support/SWX01_XwingCoreRulebook_lowres.pdf
The part that's missing from the text description of page 17 in the post above is the visuals - it should read:
Important: If the active ship is executing a [koiogran turn]
maneuver that causes it to overlap another ship,
instead treat its maneuver as a [straight] maneuver with the
same speed and color revealed on the dial.
Note, though, that this section is only referring to overlapping ships, and actually has nothing to do with obstacles as the OP was asking about.
Page 20 contains the relevant info, and I believe Jaravak has it right. If you go completely through the asteroid, you will complete the k-turn, but you will skip the action phase and roll for damage.
Which brings up an interesting question: If at the end of your k-turn move you are NOT completely past the asteroid but overlapping it, which direction will you be facing? Page 17 deals only with ship overlap, so I am inclined to say that you would complete the k-turn, lose your action, roll for damage, and lose your attack for the turn. Does this seem right?
I would say so, Zig. The reason I referenced page 17 is because overlapping a SHIP causes you to not execute the k-turn. It says absolutely nothing about obstacles. And there isn't anything in the Obstacles section that says otherwise, so yes, you still perform the k-turn maneuver regardless of the asteroid, although you still suffer the effects of the asteroid.
Ok now i am confused. I thought if you pass completely through an obstacle or other ship and were completely clear no matter what move you made it was if you flew under or over said obstacle or ship. With no damage roll or loss of actions.
wackydave said:
Ok now i am confused. I thought if you pass completely through an obstacle or other ship and were completely clear no matter what move you made it was if you flew under or over said obstacle or ship. With no damage roll or loss of actions.
You suffer consequences with asteroids. You can move through other ships without consequences, assuming there's no overlap or base touching at the end of the movement.
For asteroids, there are 3 possibilities of bad effects that you have to consider as soon as 1 or 2 of the following happens: template goes through asteroid and/or ship ends on asteroid (overlap):
A) end position not overlapping: roll red die for potential dmg + lose action
B) end position overlapping: roll red die for potential dmg + lose action + no shooting for you. If your front pegs are not on the asteroids, then that's that. Proceed as normal for the next move
C) if you're in situation B BUT your front pegs are over the asteroids, meaning you'll have to exit the asteroid by going through it again, you'll suffer the consequences again, as is done in scenario A.
ziggy2000 said:
Which brings up an interesting question: If at the end of your k-turn move you are NOT completely past the asteroid but overlapping it, which direction will you be facing? Page 17 deals only with ship overlap, so I am inclined to say that you would complete the k-turn, lose your action, roll for damage, and lose your attack for the turn. Does this seem right?
Oh yeah, and add a stress token on top of all that too.
How ironic, hothie, that this is the exact situation I found myself in against you on Sunday, and it helped you destroy me next turn…