If I e-file thru turbo tax do I still need to mail in my forms and w-2?

There is nothing to mail if you e-file your tax return.

See this - https://ttlc.intuit.com/community/print-and-file/help/do-i-need-to-mail-anything-after-i-ve-e-filed/01/26144

No.  When you efile there is nothing to mail.  Except maybe a check if you have a tax due.  That's one of the big benefits to efile.