thanks . okei, planing tl emty that efr9180, but i qil stlp where it feels best and dont over stress it.
my old engine with the same sylinderhead only then it was 31mm exhoust valve. 8:0 kompresion and hart inlett, it made 484hp on the back wheel with only 1.45 boost and ita stoppet there becouse the turbo was a gtx3076r with ar63, so it was having to mutch back presure stock 2wd manifold to .

but when i se what other use on high hp cars i cant se why it could give alot hp if ported up and 70mm trootle. so curious about what people think