Pyflakes + pep8 checks vim in normal mode

I use vim as my IDE with python, and that was great. I am using pyflakes + pep8 with the appropriate plugin. I need these additional features:

• pyflakes checks on the fly without having to switch to normal mode.
• pep8 check on the fly. Currently I have mapped “F6” to do a pep8 check and a quickfix popup appears. I want pep8 to execute in the same way as pyflakes, but in normal mode.
• The main points for pep8 and pyflakes should be different.

thank