Ok. I've read a lot about guys saying their boost goes to something, lets say 19psi and then drops to 17 or so. My car goes to 20psi and stays there until I let off or change gears.

Is this what the car is suppose to do or should it be dropping down slightly?

Thanks,

 

A stock evo 8 at 3500 pushes 19 psi, then when it gets to 6500 it drops down to 16 psi. Do you have any mods done to your car cause if you have a boost controller you def can keep the psi up to 20. But stock thats what it does. Hope that helps

 

maybe the ecu was flashed?

 

take it into redline and see if it holds. I have a mbc and mine still drops when I hit redline. Holds 21 to about 6000 and drops to about 18 or so.

 

in stock form it should drop a little... with a boost controller it should hold boost strong all the way to redline

 

your lucky i got an oil cange and now it falls to 10psi