Slow acceleration... '90 Celica

I hope that no one minds me asking so many questions in this group. I
seem to trust you guys a little bit more. Those that I ask out here
don't give me too many answers and I'm often told, "Well if you had an
American car..." *LOL* BUT ANYWAY...

I have a '90 Celica ST. I understand that the ST isn't exactly the
fastest vehicle but I was wondering if there was anything I could do to
boost the acceleration a little bit. Would fuel injector cleaners help?
I heard that these sometimes shouldn't be used because if there was
some sort of grime sealing a leak somewhere on the vehicle, the cleaner
would clean the grime and cause the leak to come back. Any truth in
that?

What other options do I have?

Thanks again!

.