It's possible that your overclock was successful, and Apple's firmware cannot recognize it. 194 MHz is a bus speed that no Apple product ever shipped with. On at least one other model of PowerPC Mac, the firmware was known to prevent reporting of an altered bus speed that fell outside the usual parameters.
You can read the article
here, but the condensed version is that a Power Mac G4 system bus was overclocked from 100 to 120 MHz via the use of a DIP switch installed on the logic board. Both Mac OS and Linux refused to report any change to the bus or processor speed. However, the change was able to be observed by the use of comparative benchmarks, which demonstrated that the Power Mac was running faster.
If you've undertaken a hardware hack as you've described on your DLSD, and it still boots, well...you've done
something to it. The modification should be able to be seen by comparative benchmarks; although in your case without a DIP switch to readily change the settings back and forth, you'll either have to undo your hack to test it or rely on benchmarks reported by others. But one way or another, the effect should be observable, if not reportable.
