Well i installed the hks evc the other nite and did many highway runs to see how boost was holdin.Held rock solid at 20.5.Then i decided to put in some 100 octane and went on the highway and punched it and boost jumped out to 23psi and warning started to beep.im not to sure why it jumped like that so could some one give me there thoughts.Or maybe i did something wrong when i installed it.Or did i not program it right?Thanks

 

18 veiws and no help.

 

If it spikes once in a while, chances are it's normal. Mine spikes to 23 or so sometimes. As long as you're not holding it to redline, you should be alright.