NO. Your e.v. does not change at all.
Both your win and loss expectations double in terms of real dollars.
It does increase your variance, which is to say that your swings will be wider in both directions - plus and minus.
If the game has a negative e.v. [and V.P. does] doubling up on a virtual coin flip is not a very good idea,
but it is really a purely subjective matter re: your personal level of risk-aversion.
On a related matter, if you consider that Video Poker, presuming that you play the correct games, AND play without errors, AND utilize an excellent strategy, probably has an e.v that is better than 99%, BUT if you are intending to play for a few hrs. and are willing to stipulate that you are NOT expecting to hit a Royal Flush, your e.v. is probably about 96%, leaving you with an e.v. of -4.0%; but wait - it is far worse than that; because nobody considers the huge federal Tax 'Bite', as if it need not be paid.
In my humble opinion, for most players V.P. is not an advantageous opportunity.