I have an update. I got my ZX14 back this last April. Stock size tires, stock spkts. Life was good all summer, over 3,000 miles. My bike now has around 23,000 miles on it total, the last couple thousand not showing up on the ODO cuz that quit working with this same issue at about 21k miles.
In Sept/2019, I put on new (stock size) tires AND put the 1 tooth lower rear Supersprox back on for our almost annual trip to the Dragon again. Rode 600 miles from my dad's, in Chicago area, to KNoxville, and a few more hundred around Knoxville, Deals Gap etc. Well wouldn't you f-n know it, the CODE 24 is back and the dash is acting crazy. It runs fine. Only the tach, gear indicator, gas guage, and clock (sort of?) work. I rode another couple hundred miles while down there and road back to dad's with this issue. I sure as hell wasn't gonna leave it in Knoxville again. My Escort 360 has GPS so I know how fast I am going, just not how far.... So, I've put well over 2,000 miles on it with this shit going on. Assuming this is the speed sensor again, where is a how-to tutorial? And I have tried to google and I see no clear youtube or??
My riding season is coming to a halt, so I'll address this over the loooooong coooold winter. I'll figure out what sensor(s) need to be replaced and do it.
If there is a moral to this story, I guess the bike likes the stock gearing??? It is just weird that it takes hundreds or thousands of miles before coming up with this issue.
Last edited by ominousone; 10-11-2019 at 05:44 AM.