Why it originally wouldn't make power with the HKS cams i'm not sure. Valve springs was the main thought but I can't confirm.
After the head was rebuilt with the Poncams the cat had collapsed and wouldn't make power, once that was fixed it was fine. The HKS cams were installed in a different car which made power fine so it wasn't the HKS cams (wish i had kept them to be honest.)
The MAP sensor on the Microtech is still the 20psi model which is a bit annoying because we can't tune near 20psi. The car is also tuned very safe and rich, which doesn't bother me however. I'm not going to chase 5kw by leaning it out. Every one also says the dyno we use isn't really happy as every ones car reads lower on it than elsewhere. However I cant be bothered paying money to some other place just so I can get a larger reading on a sheet.
In conclusion the turbo is at its limit. A MAP sensor upgrade to tune it properly around 20psi and taking a bit of fuel out would help it make a bit more power, but not much. On another dyno it would probably make 270 but as said earlier, not really interested.
The latest power modification to the car are FINALLY nearly ready to be tested. I've just been having a problem with an intercooler pipe constantly blowing off which has halted the progress. Once this is sorted ill get the car ready for the dyno again and go for around 300kw and see if it holds together on the stock bottom end.
The car doesn't get driven that much any more unfortunately so nowadays doesn't get first priority like it used to. Finishing my uni studies this year and riding the motorbike every where makes modifications to the car come to a halt lol.
Anyway that turned into a stupidly long post, sorry