Don't think so, believe you could use either haymaker or EW, not both. Both are/require an action to activate.

OK... Here's one that hasn't been asked yet... I think!

Can Haymaker be used with a flurry attack?? ouch any one?

No, Flurry is a close combat action that allows you to make 2 close combat attacks.

Haymaker won't work with Flurry for the same reasons Icapacitate won't work with Flurry.