I'm having this same issue...

A few things I plan to check and/or replace.

1. Fuel pump & filter
2. Fuel pressure regulator
3. Get injectors cleaned &  rebuilt
4. Check timing

It almost seems like a leaky injector or two... It feels like its dumping
too much fuel into the cylinder while stopped and getting really boggy...
Too rich.

I'll be watching for some more responses and hopefully both if us can get
this issue resolved.

Abel Longoria.
On Jun 15, 2015 9:25 AM, "Rick Cooper" <rickdcooper@gmail.com> wrote:

> I've noticed that when accelerating from an intersection, after sitting at
> a red light, my 2.1 WBX will sometimes hesitate for 5 to 15 seconds.  I'll
> start moving, but the engine has no power and giving it more gas does
> nothing.  After those few seconds, the engine will start to pick up power
> and soon everything will be running fine.
>
> This has just start happening and is still sporadic, but it is becoming
> more frequent.  Seems to only happen after a full stop, like at a red
> light.  Would this be a clogged fuel filter or what?
>
> Thanks for any ideas.  FWIW,  the fuel tank and the ECU were replaced a few
> years ago.
>
> Rick
>