hi..ı have problem to hold boost at red line..boost is lowering by increasing rpm so much...exp:it peaks 1.85 bar and 1.35bar at the redline
ı have hks evc5 boost controller...
ı have invidia outlet pipe with evo9 turbo...
any idea?

 

commentss??

 

an HKS EVC 6 can control boost taper with a rpm depandant duty cycle

Boost taper on the stock turbo is normal and desired

1.85 bar is way too much boost unless you are running race gas and tuned for it

 

I would definitely try and control that spike, unless it is tuned for as mentioned above.

 

1.85 is pretty high..

 

1.85 bar is only peak..ı m running 1.4 bar continious...ı dont want to see high peaks...is this normal_?can invidia outlet pipe cause peaks?
what can ı do;?