Help needed please
I have driven it today and I am really disappointed
Boosts at 17psi (1.2 bar) but really late almost 5k, so sluggish bottom end and mid range.
It has a BD14 inlet cam and the exhaust cam is unmaked at the end, not sure what turbo itis but have a 48 rear housing and the front housing is marked up M27??
If it helps the inlet Id is 63mm pic below. I would like much more bottom end, any advice?