OK, just giving you a heads up, funny that
it would be worn out, air without dirt in it
doesn't usually wear things out.
You might want to check your air filter, and any
other places in the intake that might be leaking
dirt into the intake system.
Poor acceleration could be from an air leak also,
it would lean out the mixture, especially if this is
a Mass Air Flow system.
If you have a MAP sensor also, you may want check
and see if you have a leak in that hose too.
Alright, now I'm out of ideas
Wild