im curious to....

imo this needs to be flow benched against a stock head and measured not at only max lift but at all.... starting at minimal lift to max lift to see the tru gains on paper...

im pretty sure there are gains, just wanna know where exactly...

 

dam that nice

 

How much hp can this usually get on a stock sized turbo?

 

I am working on mine now and should be done in a couple weeks. I have a head that I have been trying different ports on so when I figure out which one I'm happy with I will put it into my head and go from there. I'll post charts from my SuperFlow 600 when I'm done.

Hand porting this exhaust sucks As soon as I'm done I'm digitizing this stupid thing so I never have to do that again! Here is what my CNC Honder port looks like Just for a comparison, on a 61mm turbo car just changing the head and nothing else produced 160 dynojet hp at 13psi (wastegate) and 80+ at 23psi. There is always power in getting more airflow Obviously a stock turbo isn't going to gain like that, but I will see how the head does on a stock turbo car

 

That is beautiful.