hi, i have installed it to my car. i am intresting what boost at what rpms do you have? becouse my seems intresting, i dont know is it normal :

3500-1.20
4500-1.10
5500-1.05
6500-1.10
redline about 1.13

is it normal, why boost drops and than go up?

 

it is the EBC trying to control the boost. Boost tapers naturally on the stock turbo

 

yeah but it shouldnt go back up

 

You should try playing with the gain to get it to even out. Also maybe play with the start boost setting because if it's too high it will cause it to spike. I have my gain set at some where between 7 and 9% and it holds smooth. when I was start setting it set the gain was too high causing it to jump up and down.

 

+1... Make sure your start boost isn't too close to your high PSI point. It will spike or sometimes surge....