I need help with my 2003 mustang gt

I have a 2003 mustang gt auto with a bad trans im getting it replaced but it has borla attack exhaust with no cats on it and no muffler and ive noticed that alotnof white smoke comes out of it only at start up and if you rev it at idle is that normal because ive started to red on it and some people says its normal and some says it a head gasket probably ive checked the oil cap alot there is no weird gunk on it and some also say its because i need a new trans my auto neutrals out shifting at 3-4 please help

yhavry said:

is it cold outside? White smoke generally means that there is water somewhere. If you cant notice any strange noises from the engine and your oil doesn't look like chocolate milk, i think you're fine. My 01 bullitt does that when she's cold on a humid day

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My bad not white its light blue smoke that im seeing