The problem with trying to change the laws in place is that they're seen as being there for the "greater good". Since most people don't modify there car to any extremes the laws don't effect most people. They are probably making a minor amount of money each year off of "exhaust" and "suspension" tickets, especially since a lot of people go get their car "fixed" after they get a ticket and get it thrown out in court. Because of that the laws can be used as an excuse to generate revenue for local businesses. If you want to write a letter to the governor go for it, I'd be curious to see if there was any response at all.