Glo PDF zoom extension?

Hi everybody

I´ve got a question.
Is there a way to enlarge the maximal zoom of PDF´s
The maximal zoom is 300%, but i need about 1000% or more, because i want to display a streetmap with 64 megapixels.
The Kobo has no problem to display that picture, but i need more zoom.

I´m running on 3.1.1

Please help me.

Ps. I know my english isn´t the best sorry for that :)