Also: get a lawyer. It's so worth it.
My first ticket here was on the Kitsap peninsula, 67 in a 50, pretty much a bogus call as I was slowing down for the 50 mph zone from a 60. I contested the ticket, showed up, entered a statement into the record stating (very carefully) that I thought my speed was reasonable and I had slowed down when entering the 50 mph zone - which I had done. I didn't make any statements as to actual speed or anything incriminating. The judge dismissed my ticket. He dismissed everyone's ticket in the courtroom that day. Which was weird. Either he was just being nice or these were cases he had earmarked for dismissal.
I think an important point was that I made no statements to the officer and there was no written statement from him on the bottom of the ticket. The written statement is basically the only evidence against you unless the officer shows up to testify, and they don't have to in this state.
If you actually were speeding and well aware of it, you shouldn't perjure yourself to get out of a ticket. That's when you pick apart the case on other points, go after the service records on the radar gun, see if the speedometer on the pace car was ever calibrated, etc. etc.
The statute number was also pretty mangled which might have merited a dismissal on it's own.
Of course, IANAL and this does not constitute legal advice. I recommend competent legal counsel. Personally, I think I'll just get a lawyer next time, and save the stress of fighting the ticket myself.