i would give it a shot with the EPM 02 housing and see what happens, but until than run off of WGA boost ?

 

I switch to the old FP 18 PSI WGA and zero preload. Result: No spikes but without EBC boost goes up to 20PSI (no EBC) and to 23PSI if EBC is in line but not electrically connected. It is clear that internal WG is too small for RED, no possibility to get similar boost control as with external WG.

 

So people who have ported the wastgate hole on the fp red hot side. Do you still have boost creep issues? Also what type of o2 housing are you using?