The porting of the internal W/G is almost sufficient to control boost down to 7psi.
When I say it reaches 7psi, I mean the fuel cut we have placed to avoid blowing past that. In higher gears, it reaches the fuel cut in a split second.
I don't see how you can say creeping all the way up to 7 is to be expected. Even with the wastegate wide open, it still hits that fuel cut like a wall in maybe a second. Wastegate connected, it hits that even faster, as if the thing is welded shut.
Even with overly retarded ignition timing, I wouldn't think it could creep that
much... The inital tuning was done by Forged Performance, so I don't see how it could be all that off anyway. Does anyone have an ignition map I could compare with to double check?
Phil; I though most of the FF kits run at about 7psi to start with. When talking with JP at Radium, he suggested 7 as a good place to stay, and 9psi as pushing it. The problem though is not the amount of boost, but the rate it creeps. In say 3rd gear, if you give it 100% throttle, it will hit that fuel cut in a split second, wastegate arm wide open.
With the rate it shoots up to 7, there is no way it would level out at 9 or 10.. (see below)