car dies sometimes

[04CobraVert]

sometimes when im coming to a stop the car dies

when i take it out of gear coming up to a stop the rpms drop down to 500 then usally go back up but every once in a while the car will shut off

its only done this since i got the tune

any ideas

 

[03soniccobra01]

Take it to the dealer for the stall re-flash. They will flash a new program for you into your ecm. It will fix the problem. Do a serch for the TSB for the stall.!

 

[HISSMAN]

He has an 04. Check for a vaccum leak.