Hey guys, I just finished installing my HKS EVC V and everything went pretty smooth, except for one thing. Once I plugged my negative batter cable back on, the horn went crazy, I was able to start the car but since the horn was so loud and I had to disconnect the battery again. I think its the Anti-Theft system activated, anything I could do about this??

 

There is no antitheft system on the Evo stock. Just the chipped key...

SC~