Boost tap problem

[dukhqan]

Hi all,
I got my m50 e30 modified with turbo o stock ECU and used the yellow 3500cc BMW engine injectors, o this setup it the boost was for 0.3 Bar, and everything is ok, now i installed a boost tape to manually adjust the boost and tried to open it to 0.6 Bar, the engine give good power on the beginning but it seems that when i reach the RPM 4000 or more the engine just stall and like if it's dead, do i have something missing here? or do i have to upgrade something else here!? i used the mid to small size garret turbo that is used on BENZ.

[fairweatherpunk]

If I had to guess your either getting too much fuel (which is not likely if your injectors haven't been changed out) and your flooding the cylinders or not enough fuel. The higher your go in rmp the greater the fuel demand typically.

[EgMpower]

not enough fuel... did you upgrade your fuel pump?