I'm about to dump my car in a lake. I dont know if all these problems are related to my AEM ems here is the link to that thread https://honda-tech.com/zerothread?id=1656183

Fully built b16
turbo yada,yada
255 lph walboro
AEM EMS

(1)Right now, my gas guage is waaaay off, it shows 1/4 tank when it has an almost full tank.

(2)My speedo and odometer doesnt work, I took the VSS and put it on my stock sohc and it worked fine! so its a good VSS.

I also have misc **** that doesnt work like trunk light,sunroof etc but those two mentioned above are most important

All fuses were checked, wiring harness was checked by an expert. whats causing this??

 

could be a bad cluster. that is what was wrong with mine. Got a different cluster, and it was fixed. Try to find a old cluster just to see before you drop $100 on a cluster.