hi. i just got a hks evc iv and installed.just wondering how many psi can i run with
my fd? i got a apex power fc, dp, mp, cat back, street port engine, and big intercooler,intake......ect.can i run with 14 psi safety?????? and i find out a problem,i set the number 0.90 kg on high boost...but the psi number shows on
my boost gauge is like 15psi, and frist boost stop on 9 or 10 psi,after half sec
then jump to 15 psi.......any one know waht's going on????? plaese help!!!!

 

Dude, you have posted several threads like this....take it to a good shop and have them look things over until you can learn how the car works. You will also need to get your PFC tuned.

Driving around with an untuned PFC and the stock fuel system at 14-15 psi is asking for trouble. Unless you feel like replacing the motor, I suggest you lower the boost to 7 psi, don't go WOT, and have someone who knows what they are doing look the car over.