Will MMS In iPhone 2G/3.1.2 Drain Battery?

I got an iphone 1G running 3.1.2. I want to use MMS on it by installing 'Native MMS iPhone 2G' or other patch that enables MMS. When I was on 3.0.1, the patch did drain my battery big time. Now, being that I'm on 3.1.2, will this drain my battery?