Thought I'd better finish this properly
So the car started breathing oil after fitting the 10PSI restrictor, it was pushing too much air past the pistons.
So before it finally gave way we held a RR day. Considering it was breathing oil I was skeptical about performance. The 5PSI restrictor was back in and it made a healthyish 231bhp and 209 lbft.
Considering it was never mapped for my engine I was happy with the results.
I would say it was easily at 250+ before the oil problems started.
So after this unfortunately it was time to get rid and save for a house.
So it was great while it lasted and I would do it again and again (this was the third!) but it was such a brilliant car.
So I ended up sharing my girlfriends Corsa VXR but I just couldn't get on with it. So I have just bought my first personal Ph2! Watch this space.....